Safe Onion Sourcing for San Francisco Food Service

California Produce Safety & Local Supplier Vetting

California follows FDA FSMA Produce Safety Rule (21 CFR Part 112) requirements, which mandate supplier verification for all produce including onions. When sourcing onions in the San Francisco area, verify that suppliers maintain California Certified Organic Farmers (CCOF) or equivalent certification if purchasing organic varieties. Request documentation of Good Agricultural Practices (GAP) audits, water quality testing, and worker hygiene protocols from all suppliers. The CDFA conducts routine inspections of produce growers and distributors; ask suppliers for their most recent inspection reports. Document all supplier communications and certifications as part of your HACCP plan—this becomes critical during a recall.

Cold Chain Management & Storage Requirements

Onions have longer shelf life than many produce items when stored correctly, but temperature fluctuations during transport and storage can accelerate decay and create pathogen risk. Store onions in dry conditions between 45–55°F with low humidity (65–70%) to prevent Salmonella and other pathogens from proliferating in compromised bulbs. Monitor receiving temperatures using calibrated thermometers and document arrival conditions. San Francisco's maritime climate can challenge cold chain integrity during delivery—ensure suppliers use insulated vehicles and track temperature logs. Damaged or sprouting onions should be discarded immediately, as compromised skin increases contamination risk.

Traceability, Recalls & Seasonal Sourcing Strategy

The FDA's Food Traceability Final Rule (effective January 2026) expands traceability requirements for onions and other produce. Maintain lot codes, harvest dates, and supplier origin information for every shipment received; this data is essential if the FDA issues a recall notice. San Francisco sources onions year-round from California producers (peak: April–May and September–October) and from interstate suppliers during off-seasons. When recalls occur—such as Salmonella or E. coli contamination linked to specific growing regions—you must quickly identify affected inventory using lot numbers. Subscribe to FDA and CDFA recall alerts, or use a platform like Panko Alerts that monitors 25+ government sources in real-time, to get immediate notification of produce recalls before they reach your operation.

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