How Long Can Buffet Food Sit Out? (US and UK Official Rules)
Direct answer
US (FDA Food Code): keep hot food at 135°F or above and cold food at 41°F or below; food held without temperature control must be discarded after 4 hours cumulative (cold food that stays under 70°F gets 6). UK (Food Standards Agency): hot food is held at 63°C or above, with a single exemption of up to 2 hours below that before you must serve, chill or discard; chilled food has a legal 8°C maximum with one 4-hour display window. Plan service, not just quantities: a 6-hour reception needs holding equipment or staged replenishment, not one long buffet.
Use time OR temperature — decide before the event
Both regimes give you two compliant strategies. Temperature control: hot holding (chafers, warmers) above 135°F/63°C lets food stay out through a long reception. Time control: food can sit at room temperature but on a hard clock — 4 hours US, 2 hours UK hot-hold exemption — after which it is discarded, not refrigerated for later. The failure mode is mixing strategies: food that drifted warm for three hours, got 'saved' in the fridge, and reappears at the evening buffet.
For DIY events, the practical translation: put out half trays and replenish from the cooler/oven, note the put-out time on painter's tape, and bin anything past the window. Leftovers from food that never left temperature control are fine; leftovers from the display table are not.
Assumptions
- US: FDA Food Code time/temperature provisions (3-501.16/3-501.19), adopted with state variations.
- UK: FSA Safer Food Better Business guidance implementing retained food-hygiene law.
What changes this answer
- Outdoor heat shortens real safety margins — the 4-hour clock is a maximum, not a target.
- Chafing dishes/holding equipment restart the math by keeping food in the safe zone.
- Your state or council adds stricter local rules for public (vs private) events.
Common questions
Can I put leftover buffet food in the fridge and serve it later?
Not if it was held without temperature control — US FDA rules require discarding it after the 4-hour window (UK: after the 2-hour hot exemption). Only food that stayed properly hot or cold throughout can be safely kept.
Sources
- FDA Food Code (3-501.16 / 3-501.19) — tier 1, verified 2026-07-22 · FDA Food Code 2022 PDF opened: §3-501.16 (135°F/41°F), §3-501.19 (4h/6h)
- UK Food Standards Agency — Safer Food Better Business (hot holding) — tier 1, verified 2026-07-22
Last checked 2026-07-22. Tiers: 1 government/regulator · 2 industry body · 3 official supplier docs · 4 large surveys · 5 professional material.
Legal information — not legal advice
Rules cited on this page apply to: US, UK. They were verified against the official sources listed above on 2026-07-22 and can change.Rules often differ by state, province, council or venue and depend on your event's specifics — confirm current requirements with the issuing authority before relying on them.