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The FDA issued a warning letter to San Francisco manufacturer RDM Express Inc. after inspectors identified deficiencies related to food-safety planning, sanitation and controls for refrigerated, ready-to-eat fermented cabbage products. The agency also cited labeling violations involving the company’s kvas drink, sour cabbage and half-sour pickles; the source report does not specify whether any illnesses or product recalls were linked to the findings.
The Food and Drug Administration issued a warning letter to RDM Express Inc., a San Francisco food manufacturer, citing deficiencies in its food-safety plan, sanitation procedures and controls for refrigerated, ready-to-eat fermented cabbage products. The agency also cited labeling violations involving the company’s Russian-style kvas drink, sour cabbage and half-sour pickles.
The findings were reported by Food Safety News on October 26, 2026. The FDA’s cited concerns cover both preventive controls at the manufacturer and how certain products were labeled. The source report does not provide the warning letter’s full text or describe each specific deficiency, so the nature and scope of the individual findings cannot be established from the available information.
The products identified include refrigerated, ready-to-eat fermented cabbage and three items named in connection with labeling: Russian-style kvas, sour cabbage and half-sour pickles. The report characterizes the agency’s concerns as involving pathogen risks and labeling violations, but it does not identify a particular pathogen, say that a product tested positive for contamination, or report a confirmed illness linked to the company.
FDA warning letters are part of the agency’s enforcement activity. According to the report, businesses generally have 15 days to respond to a warning letter. It also says such letters may be posted weeks or months after they are sent, and that portions can be redacted. The publication does not give the date RDM Express received its letter or describe any response from the company.
Food Controls and Product Labels
The cited issues concern foods that are refrigerated and ready to eat, making the company’s food-safety controls directly relevant to whether those products are handled and produced under appropriate safeguards. The FDA’s references to pathogen risks and sanitation indicate that the agency identified areas requiring attention; they do not, on the information reported, establish that contamination occurred or that consumers became ill.
Labeling violations matter for a separate reason: labels communicate information to consumers and are subject to regulatory requirements. Because the available report does not specify what was wrong with the labels, readers cannot determine whether the concerns involved ingredients, product descriptions, required statements or another issue. The warning letter puts the company on notice to address the agency’s findings, while leaving the precise corrective steps and their status unknown.
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How FDA Warning Letters Work
The report describes warning letters as one part of the FDA’s oversight of businesses under its jurisdiction. It says letters may follow a period in which a company has had time to correct problems, sometimes over months or years, before the agency issues a formal warning. That general description does not establish how long FDA had been in contact with RDM Express or what actions the company may already have taken.
Public access to the letters can also lag behind their issuance: according to Food Safety News, some are not posted until weeks or months later, and portions may be redacted. The October 26 report therefore provides a limited account of the development rather than a complete record of the agency’s observations, the company’s compliance history or its response.
“The agency cited deficiencies in the company’s food safety plan, sanitation procedures and controls for refrigerated, ready-to-eat fermented cabbage products.”
— Food and Drug Administration, as described in the Food Safety News report
Details Await the Full Letter
The report does not establish which pathogen risks the FDA identified, whether inspectors found a specific pathogen, or whether any product was associated with illness. It also does not provide the exact sanitation or food-safety-plan deficiencies, the specific labeling problems, or the full range of products affected. Those details would be needed to assess the findings’ practical scope.
It remains unclear when the letter was sent, whether the FDA’s account includes redactions, whether RDM Express has responded, and whether the company has completed corrective actions. The source report does not announce a recall or product withdrawal, but its silence on those actions is not confirmation of the company’s current distribution or inventory status. No company statement is included in the material provided.
Company Response and FDA Follow-Up
RDM Express is expected to respond to the FDA within the agency’s stated 15-day response period, measured from receipt of the warning letter, according to the report. The report does not give a receipt date, so a specific response deadline cannot be calculated from the information available.
Further developments could clarify whether the manufacturer disputes the findings, what corrective measures it proposes, and whether FDA considers those measures adequate. The agency’s follow-up, any company response made public and publication of the complete warning letter, if available, would help establish whether the cited food-safety and labeling issues have been addressed.
Key Questions
Which company received the FDA warning letter?
The letter was issued to RDM Express Inc., a food manufacturer in San Francisco, according to the report.
What did the FDA cite?
The agency cited deficiencies involving the company’s food-safety plan, sanitation procedures and controls for refrigerated, ready-to-eat fermented cabbage products. It also cited labeling violations involving Russian-style kvas, sour cabbage and half-sour pickles.
Did the report confirm contamination or illness?
No. The report refers to pathogen risks, but it does not identify a pathogen, report a positive test or link the products to a confirmed illness.
Is there a reported recall?
The source material does not report a recall or product withdrawal. It also does not provide enough information to establish the products’ current distribution or availability.
What happens after an FDA warning letter?
Food Safety News reports that businesses generally have 15 days to respond. The report does not state when RDM Express received its letter or whether the company has responded.
Source: foodsafetynews.com
