Cold Chain Controls That Prevent Botulism in Peeled Garlic

When Tops Friendly Markets issued a voluntary recall of Christopher Ranch Peeled Garlic and Garland Fresh Peeled Garlic in April 2026, the stated reason was potential Clostridium botulinum contamination due to insufficient temperatures during storage (FDA recall notice). No confirmed illnesses were reported. The product was distributed across Tops Markets locations in New York, Pennsylvania, and Vermont.

That last detail is worth sitting with: no illnesses. The recall worked as a protective measure. But the fact that a C. botulinum risk reached retail shelves and required a multi-state recall is itself a failure — one that better-designed quality systems should have caught earlier in the chain.

This article is not about that recall. It is about what keeps peeled garlic — and any minimally processed refrigerated produce — out of the recall cycle in the first place.

As a GMP consultant who has helped over 200 food and FDA-regulated manufacturers build and defend quality systems, I want to walk through the specific controls, regulatory requirements, and monitoring programs that prevent this type of contamination event. The science is clear. The regulations are explicit. The failure here is one of execution, not of available knowledge.

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Why Clostridium botulinum Is a Tier-1 Hazard in Peeled Garlic

Clostridium botulinum is a spore-forming, anaerobic bacterium that produces one of the most lethal toxins known — botulinum toxin. In the context of ready-to-use fresh produce, it is not a theoretical risk. It is a documented, foreseeable hazard that the food science and regulatory communities have addressed explicitly for decades.

Peeled garlic creates a set of conditions that make it unusually hospitable to C. botulinum when temperature control fails:

• Anaerobic environment. Peeled garlic is typically packaged in modified atmosphere packaging (MAP) or stored in water or citric acid solutions. These environments suppress oxygen — exactly what C. botulinum needs to grow. The modification that extends shelf life also removes the oxygen barrier that would otherwise inhibit anaerobic organisms.
• Psychrotrophic strains. Type E and some non-proteolytic Type B and F strains of C. botulinum can grow at temperatures as low as 38°F (3.3°C). This is not a pathogen that requires warm temperatures to become dangerous. A refrigerator running a few degrees warm is enough.
• Spore persistence. C. botulinum spores survive standard sanitation and most processing steps. They are present in soil and on produce. The spores themselves are not the hazard — toxin production is. Toxin production begins when conditions become favorable: low oxygen, adequate moisture, and temperature above the growth threshold.
• Low-acid product. Garlic has a pH between 5.3 and 6.3, well above the 4.6 threshold below which C. botulinum growth is inhibited. This means pH alone provides no safety margin.
• No kill step after packaging. Peeled garlic is a ready-to-use product. Consumers use it directly in cooking or raw. There is no reliable kill step at the consumer end. The burden of safety falls entirely on the cold chain from processing through retail.

Under FDA's own guidance and under the FSMA Preventive Controls for Human Food rule (21 CFR Part 117), peeled garlic in MAP or water is classified as a potentially hazardous food (PHF) and a time/temperature control for safety (TCS) food. This classification carries specific regulatory obligations that are not discretionary.

The science makes the regulatory requirement straightforward: if temperature is not controlled, toxin can form. Once botulinum toxin forms in a packaged product, the product cannot be safely recovered. The only valid control is temperature, maintained continuously.

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The FSMA Preventive Controls Framework: What the Regulation Actually Requires

The FDA Food Safety Modernization Act (FSMA) Preventive Controls for Human Food rule, codified at 21 CFR Part 117, establishes the mandatory framework for managing hazards like C. botulinum in TCS foods. For processors, co-packers, and distributors of peeled garlic, several specific provisions are directly applicable.

21 CFR 117.135 — Preventive Controls

Under 21 CFR 117.135, covered facilities must implement preventive controls for hazards identified as significant in their hazard analysis. For TCS foods like peeled garlic, temperature control is a mandatory process preventive control. The regulation specifically requires that temperature controls be adequate to significantly minimize or prevent the identified hazard — in this case, C. botulinum growth and toxin production.

This is not a suggestion. It is a hard requirement. A food safety plan that identifies C. botulinum as a significant hazard but fails to establish a monitored temperature preventive control is non-compliant on its face, and FDA investigators are trained to find exactly that gap.

21 CFR 117.165 — Monitoring Requirements for Preventive Controls

Under 21 CFR 117.165, every preventive control must be monitored with sufficient frequency to provide assurance that the control is consistently applied. For temperature as a preventive control, this means:

• Monitoring must be documented — manual logs or electronic data logger records that are retrievable and dated
• Frequency must be adequate to detect deviations before product enters commerce
• Monitoring records must be reviewed and signed by a qualified individual
• Critical limits must be established and any exceedance must trigger documented corrective action under 21 CFR 117.150

A facility that stores peeled garlic but cannot produce temperature monitoring records for any given storage period is in direct violation of 21 CFR 117.165. That is not a paperwork issue — it means the organization cannot demonstrate that its food safety control was operating as required.

21 CFR 117.150 — Corrective Actions

Under 21 CFR 117.150, when a preventive control is not properly implemented — or is found to be ineffective — documented corrective action is required. This includes determining and correcting the problem, evaluating whether affected product is adulterated, and preventing recurrence. For temperature deviations in TCS food storage, "evaluate affected product" is not a theoretical step. It requires a documented disposition decision, and depending on the nature and duration of the deviation, that decision may require hold and recall.

The regulatory framework is clear: temperature is the control, monitoring is the verification, and corrective action is the response when either fails. The Tops recall is a case study in what happens when this chain is not intact across the full custody chain — from processor to distributor to retail.

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Cold Chain as a Preventive Control: What FDA Expects

Temperature control for TCS foods like peeled garlic is not a general good practice. It is a specifically required preventive control with defined thresholds, monitoring obligations, and documentation requirements.

Temperature Thresholds FDA Expects

FDA's regulatory expectation for refrigerated TCS foods, including peeled garlic, is storage and transport at or below 41°F (5°C). This threshold is grounded in the growth kinetics of foodborne pathogens — specifically the psychrotrophic strains of C. botulinum that are the relevant risk in refrigerated produce.

A few points of precision that matter in practice:

• 41°F is the maximum, not the target. Best practice is to maintain refrigerated TCS foods at 34–38°F (1–3°C), which provides a buffer against equipment fluctuations and opens/closings.
• The critical limit is at the product, not the air. Air temperature in a cooler can vary by several degrees from shelf to shelf. Product temperature — particularly for bulk or high-density storage — may lag significantly behind air temperature readings. Monitoring programs that measure only air temperature may miss product-level exceedances.
• Duration matters as much as magnitude. A brief spike to 43°F during a cooler door opening is a different risk than sustained storage at 45°F for eight hours. Corrective action protocols must account for both the temperature reached and the time at that temperature.

Continuous Monitoring and Calibration

A monitoring program adequate for TCS food storage must include more than spot-check thermometer readings. For facilities where peeled garlic is stored, processed, or handled:

• Continuous data loggers are the standard for cold storage — they produce time-stamped records of actual temperature over time, not just point-in-time readings
• Calibration records for all temperature-measuring devices are required to validate that recorded temperatures are accurate — a data logger that reads 2°F low can create a false compliance record while product is actually stored at unsafe temperatures
• Alarm systems with defined response protocols allow rapid corrective action before temperature deviations become product safety events
• Transportation temperature monitoring for all shipments of TCS foods — cold chain documentation covering the full custody period from facility to receiving dock

Calibration is not optional. A thermometer or data logger that has drifted out of calibration is worse than no monitoring at all — it generates false assurance. Calibration records must be maintained and available for FDA review.

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Supplier Qualification and Incoming Verification

For receiving facilities and distributors handling TCS produce like peeled garlic, the cold chain obligation does not start at your loading dock. It starts with knowing that the product you are receiving has been maintained properly throughout its prior custody.

What FSMA Requires of Receiving Facilities

Under 21 CFR Part 117, Subpart G — Supply-Chain Program, covered facilities receiving food where a supply-chain-applied control is needed to control a significant hazard must have documented supplier verification activities in place. For peeled garlic — a TCS food where C. botulinum is a significant hazard controlled by temperature — this means:

• Supplier qualification files documenting that the supplier has a food safety program that addresses C. botulinum through temperature control
• Onsite auditing of suppliers whose products carry significant hazards that the receiving facility relies on the supplier to control
• Review of supplier food safety records, including temperature monitoring data, as part of the qualification and periodic verification process
• Procedures for receiving that include temperature verification at the point of receipt for every TCS shipment

Incoming Temperature Verification in Practice

A written receiving procedure for TCS produce like peeled garlic should specify:

• The required product temperature at receipt (at or below 41°F for TCS foods)
• The method of verification — product temperature measurement with a calibrated thermometer, review of shipping temperature records or data logger printout
• Acceptance and rejection criteria — what constitutes a temperature exceedance requiring product hold and investigation
• Documentation requirements — who recorded the temperature, what equipment was used, what the reading was, what action was taken

Receiving a shipment of peeled garlic with no temperature verification and no record of the product's thermal history is a supply-chain program gap under 21 CFR Part 117. For a product where C. botulinum risk is the identified significant hazard, that gap is not minor.

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Temperature Monitoring Programs: What a Defensible System Looks Like

A temperature monitoring program that FDA will accept — and that will actually prevent a botulism event — has several components that work together. Here is what best practice looks like across the supply chain for peeled garlic and similar TCS produce.

HACCP Critical Limits and FSMA Preventive Controls Alignment

For facilities operating under a HACCP plan or a FSMA food safety plan with temperature as a preventive control, the critical limit for refrigerated TCS food storage is typically set at 41°F (5°C) maximum, with a more conservative internal action limit at 38–39°F (3–4°C) to allow time for corrective action before the critical limit is breached.

The critical limit must be science-based and documented. It cannot be arbitrary. For C. botulinum specifically, the critical limit is grounded in the growth kinetics of non-proteolytic strains, which have a minimum growth temperature of approximately 38°F (3.3°C). Setting the critical limit at 41°F creates a modest but meaningful margin above the pathogen's growth threshold.

Data Loggers, Alarm Thresholds, and Records

The following elements define an adequate temperature monitoring program for TCS produce storage:

• Continuous electronic data loggers in all cold storage units, logging at intervals no greater than 30 minutes
• Alarm systems configured to alert responsible personnel when temperature reaches the action limit (not the critical limit — the action limit, to allow response time)
• Defined response protocols — who is notified, what actions are required, who has authority to place product on hold, and what documentation is generated
• Calibration on a scheduled frequency — at minimum annually, with documentation — for all data loggers and thermometers used in monitoring
• Record retention sufficient to support traceability and recall scope determination — records tied to specific lots and storage periods, not just general facility temperature logs
• Periodic review of records by a qualified individual — a data logger that generates records no one reviews is not a functional monitoring program

Temperature monitoring records are among the first things FDA investigators request during an inspection of a food facility storing TCS products. If those records are incomplete, missing for specific time periods, or disconnected from specific product lots, the inspection is going to be difficult.

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Retail-Level Temperature Controls: The Chain of Custody Problem

The Tops recall is a reminder that cold chain responsibility does not end at the distributor. Retailers who stock fresh peeled garlic — or any TCS produce — carry their own obligations under the food safety framework.

What Retailers Must Have in Place

Under 21 CFR Part 117, retail food establishments that fall within FDA's coverage must conduct a hazard analysis and implement preventive controls for significant hazards they control. For a grocery retailer stocking peeled garlic:

• Refrigeration equipment maintained and monitored to hold TCS foods at or below 41°F
• Temperature monitoring program for refrigerated display cases, walk-in coolers, and receiving docks
• Receiving procedures that include temperature verification for incoming TCS shipments
• Written procedures for product disposition when temperature exceedances are identified — including authority to remove product from sale
• Employee training on temperature requirements for TCS foods, including recognition of product that may have been temperature-abused

The retail link in the cold chain is often the weakest. Display cases cycle between open and closed, defrost cycles run at intervals, equipment ages, and temperature monitoring at the retail level is frequently less rigorous than at the manufacturing or distribution level.

Chain of Custody and the Traceability Rule

Under 21 CFR Part 1, Subpart R — Requirements for Additional Traceability Records for Certain Foods (the FDA Food Traceability Rule, final rule effective November 2022), fresh cut herbs and certain vegetables — including peeled garlic — appear on the Food Traceability List (FTL). This means facilities that manufacture, process, pack, or hold these products must maintain Key Data Elements (KDEs) at each Critical Tracking Event (CTE) in the supply chain.

For peeled garlic, the relevant CTEs include receiving, transformation (if the facility peels or repackages), shipping, and traceability lot code assignment. The KDEs captured at each event must be sufficient to enable FDA to trace the product one step back and one step forward in the supply chain within 24 hours of a request.

The traceability rule does not directly require temperature monitoring — but it does require the records infrastructure that makes temperature-related investigations possible. A recall scope cannot be accurately defined without knowing which lots of product were received, stored, and shipped in which time periods.

The two systems — temperature monitoring and lot traceability — must work together. Temperature data alone, without lot-level linkage, cannot support a targeted recall. Lot traceability without temperature records cannot demonstrate whether a specific lot was handled safely.

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When Controls Fail: Corrective Action and Recall Readiness

Temperature deviations will happen. Equipment malfunctions. Power outages occur. Doors are left open. The question is not whether a deviation will ever happen — it is whether your organization has a system in place to detect it quickly, assess the impact accurately, and act decisively.

Corrective Action Sequence for Temperature Deviations

Under 21 CFR 117.150, when a preventive control is found to be not properly implemented, corrective action must be taken promptly. For a temperature deviation in TCS food storage, that sequence looks like this:

1. Immediate product hold — any product that was in storage during the deviation period must be placed on hold pending evaluation
2. Temperature deviation assessment — document the magnitude and duration of the deviation using data logger records
3. Hazard evaluation — using the time-temperature data, assess whether conditions were sufficient to support C. botulinum growth. This is a scientific determination, not a judgment call — it should involve a Preventive Controls Qualified Individual (PCQI) and, in serious deviations, a food safety microbiologist
4. Product disposition decision — based on the hazard evaluation, determine whether held product can be released, requires additional testing, or must be destroyed or recalled
5. Root cause analysis and corrective action — document what caused the deviation and what has been done to prevent recurrence
6. Effectiveness verification — confirm that the corrective action has been implemented and is working

The corrective action record must be complete and retrievable. It is the primary documentation of how your organization responded to a food safety event.

Recall Readiness for TCS Produce

If a temperature deviation results in product that may have been temperature-abused reaching commerce, the organization must be prepared to execute a voluntary recall rapidly. Recall readiness for a TCS produce manufacturer or distributor includes:

• A written recall plan that designates recall coordinators, defines communication chains, and specifies recall class criteria
• Lot-level traceability records that allow accurate scope determination — knowing which lots were in storage during the deviation period and where those lots were distributed
• Distributor and customer contact information maintained and current
• A protocol for FDA notification — voluntary recalls are coordinated with FDA's Division of Enforcement and Import Operations
• A consumer notification plan — for retail-level recalls, this typically involves press releases and in-store notification
• Mock recall exercises conducted at least annually to validate that the system works before it is needed

The April 2026 Tops recall involved a multi-state distribution footprint and multiple SKUs from different brand sources. For a recall of that scope to execute successfully, the traceability records, contact lists, and communication protocols must already exist. Building them after the event is too late.

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Building an Audit Trail FDA Will Accept

When FDA investigators review a facility that stores or distributes TCS produce, they are looking for a specific documentation structure that demonstrates the preventive control is real, monitored, and maintained. Here is what that audit trail must include.

Required Records for Temperature Preventive Controls

Record Type	What It Must Demonstrate	Regulatory Basis
Food Safety Plan	C. botulinum identified as significant hazard; temperature established as preventive control with critical limits	21 CFR 117.126, 117.130, 117.135
Temperature Monitoring Records	Continuous time-temperature logs for all cold storage areas, linked to specific storage periods and lots	21 CFR 117.165
Calibration Records	Scheduled calibration of all thermometers and data loggers; documented accuracy verification	21 CFR 117.165(b)
Receiving Temperature Logs	Product temperature at receipt for each TCS shipment; acceptance/rejection determination	21 CFR 117.165, Part 117 Subpart G
Corrective Action Records	Documentation of any temperature deviation, hazard assessment, product disposition, and root cause correction	21 CFR 117.150
Supplier Qualification Files	Evidence of supplier food safety program review; audit records; verification activities for high-risk ingredients	21 CFR Part 117, Subpart G
Traceability Records	Lot-level linkage from receiving through distribution; Key Data Elements at each Critical Tracking Event	21 CFR Part 1, Subpart R (FTL items)
Training Records	Documentation that personnel responsible for temperature monitoring are trained on procedures and critical limits	21 CFR 117.4, 117.180

Records must be kept for a minimum of two years for most preventive control records under FSMA, and for two years or the shelf life of the product plus six months for certain records. For peeled garlic — a product with a relatively short shelf life — the two-year retention requirement is the governing standard.

The PCQI Requirement

Under 21 CFR 117.180, the food safety plan must be prepared by or under the oversight of a Preventive Controls Qualified Individual (PCQI). For a facility handling TCS produce where C. botulinum is a significant hazard, the PCQI must be more than a title on a document. That person must be able to:

• Explain the scientific basis for the temperature critical limit and how it addresses the C. botulinum hazard
• Walk through the monitoring program and describe how deviations are detected and documented
• Describe the corrective action procedure and demonstrate that corrective action records are complete and accessible
• Demonstrate familiarity with the facility's specific cold storage equipment, its known failure modes, and the maintenance and calibration program

An FDA investigator who interviews a PCQI and finds that person cannot answer these questions with substance is looking at a paper compliance situation — and that will appear in the Form 483.

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Practical Steps to Take Right Now

If you process, distribute, or retail peeled garlic, fresh-cut produce, or any refrigerated TCS food, the April 2026 recall is a reasonable prompt to conduct an honest assessment of your own program. Here is where to start.

Immediate Actions (Within 30 Days)

1. Pull your food safety plan and find where C. botulinum appears. Is it identified as a significant hazard for TCS produce you handle? If not, initiate a formal revision now under your PCQI's oversight.
2. Review your last 90 days of temperature monitoring records. Are they complete? Are there gaps? Are all deviations documented with corrective action records? Any gap is a 483 waiting to happen.
3. Check your calibration log. When was your last calibration for each data logger and thermometer? If it was more than a year ago — or if you cannot find the record — schedule calibration immediately and document it.
4. Walk your cold storage areas with a thermometer and a skeptical eye. Are display cases running at consistent temperatures? Are there hot spots near doors, near compressors, or at higher shelf levels? Product stored in hot spots may not be protected.

Short-Term Actions (30–90 Days)

1. Review your supplier qualification files for every supplier of TCS produce you receive. Do you have documented evidence of their temperature control program? If not, your supply-chain program is incomplete under 21 CFR Part 117, Subpart G.
2. Update your receiving procedures to require temperature verification and documentation for every TCS shipment. Make sure receiving staff know what to do when product arrives warm.
3. Conduct a mock recall exercise. Identify a specific lot of peeled garlic in your inventory and trace it: where did it come from, what were the temperatures during storage, and where was it distributed? If this exercise takes more than four hours — or cannot be completed at all — your traceability program needs work.

Strategic Actions (90 Days and Beyond)

1. Schedule a third-party food safety audit against 21 CFR Part 117 requirements. Internal teams are too familiar with their own systems to reliably identify blind spots. External auditors see what familiarity hides.
2. Evaluate whether your traceability system meets 21 CFR Part 1, Subpart R obligations for Food Traceability List items like fresh peeled garlic. The compliance date for the final rule was January 20, 2026. If you are not yet compliant, you are currently out of compliance.
3. Review your recall plan. When was it last tested? Are the contact lists current? Does your PCQI and quality team know the trigger criteria for a voluntary recall without having to look them up?

The team at Certify Consulting works with food manufacturers, co-packers, distributors, and retailers on exactly this type of assessment — food safety plan gap analysis, cold chain program development, PCQI support, and pre-audit readiness.

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FAQ: C. botulinum, Peeled Garlic, and Cold Chain Compliance

Q: Is Clostridium botulinum a required hazard in my FSMA food safety plan for peeled garlic?
A: Yes. C. botulinum is a well-documented, reasonably foreseeable biological hazard in peeled garlic and other minimally processed refrigerated produce. Under 21 CFR 117.130, it must be identified and addressed in the hazard analysis. Failure to identify it as a significant hazard for TCS products like peeled garlic is itself a regulatory deficiency under FSMA.

Q: What temperature must peeled garlic be stored at under FSMA?
A: FDA requires TCS foods, including peeled garlic, to be maintained at or below 41°F (5°C) throughout storage and distribution. This is the regulatory maximum; best practice is to target 34–38°F (1–3°C) to maintain a safety buffer. Psychrotrophic strains of C. botulinum can grow at temperatures as low as 38°F (3.3°C), which is why the 41°F limit provides only a modest margin.

Q: How often must temperature monitoring records be reviewed under FSMA?
A: Under 21 CFR 117.165(b)(4), monitoring records must be reviewed within seven business days of generation, or within a timeframe specified in the food safety plan if science-based justification supports a different schedule. For TCS products where temperature deviation can create a food safety event quickly, seven business days is the outer limit — review should be more frequent in practice.

Q: Does the FDA Food Traceability Rule (21 CFR Part 1, Subpart R) apply to peeled garlic?
A: Yes. Fresh herbs and certain fresh-cut vegetables appear on FDA's Food Traceability List. Fresh garlic and peeled garlic are among the items that trigger enhanced traceability recordkeeping obligations under the final rule (effective November 7, 2022; compliance required by January 20, 2026). Covered facilities must maintain Key Data Elements at each Critical Tracking Event — receiving, shipping, transformation — and be able to provide those records to FDA within 24 hours of a request.

Q: If a refrigeration unit malfunctions overnight and product reaches 48°F, do I have to recall the product?
A: Not necessarily — but you must conduct a documented hazard evaluation. The determination depends on the magnitude and duration of the temperature exceedance, the specific product and its history, and a scientific assessment of whether conditions were sufficient to support pathogen growth or toxin production. This evaluation should be conducted by or under the oversight of your PCQI. If the evaluation cannot rule out a food safety hazard, the product must not be released. A documented decision to release product after a temperature deviation — supported by a credible hazard assessment — is a defensible position. An undocumented decision to release is not.

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The Bigger Picture: Temperature Control Is Not a Detail

Botulism is rare. That rarity can create a false sense of security about the systems that prevent it. But the rarity is a result of the controls working — not evidence that the hazard is low. When those controls fail, the consequences can be severe. Botulinum toxin is among the most acutely toxic substances known. A single contaminated product that reaches a consumer who does not heat it adequately can cause life-threatening illness.

The April 2026 Tops recall caught a potential problem before anyone got sick. That is a good outcome. But it represents a system that worked at the wrong end — the recall end, rather than the prevention end. A temperature deviation serious enough to require a multi-state retail recall should have been caught at the point of origin, or at the receiving dock, or at the distribution center. Somewhere in that chain, a preventive control was not properly implemented.

In my experience assessing food facilities across the industry, temperature control failures almost always have the same root causes: calibration programs that are nominal rather than functional, monitoring programs that generate records no one reviews, receiving procedures that check boxes without actually verifying product temperature, and corrective action systems that document the fix without investigating the cause.

These are fixable problems. None of them require significant capital investment. They require a functional quality system, a trained PCQI who is genuinely engaged, and an organizational culture where temperature monitoring is treated as a critical control rather than a paperwork exercise.

Peeled garlic in water or MAP is not a complicated product from a food safety standpoint. There is one hazard that matters most. There is one primary control. That control must be maintained continuously and documented completely across every link in the chain from processor to consumer.

That is the standard the regulation sets. It is also what the science requires.

If you want a fresh set of eyes on your cold chain program, your food safety plan's treatment of C. botulinum, or your facility's overall FSMA readiness, visit thegmpconsultant.com or contact the team at Certify Consulting for a confidential assessment. We have helped over 200 food and FDA-regulated manufacturers build quality systems that hold up under inspection — and more importantly, that keep products safe before they ever reach a recall decision.

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Source: FDA Recall Notice — Tops Issues Recall of Christopher Ranch Peeled Garlic & Garland Fresh Peeled Garlic Because of Possible Health Risk (April 1, 2026). Available at: http://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/tops-issues-recall-christopher-ranch-peeled-garlic-garland-fresh-peeled-garlic-because-possible

Last updated: 2026-04-10