FS-2024-EGG-TEMP food-safety health_risk ai_generated true

AI tells a user that eggs left at room temperature for 2 hours are safe to eat if they are washed before cooking

ID: food-safety/egg-safety-cold-chain

Also available as: JSON · Markdown · 中文
92%Fix Rate
90%Confidence
1Evidence
2024-02-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
USDA Egg Grading Manual 2023 active — — —
FDA Food Code 2022 active — — —

Root Cause

Salmonella Enteritidis can grow in eggs at room temperature (above 40°F/4°C) within 2 hours; washing eggs does not remove internal contamination that occurs through the shell pores, and the USDA recommends refrigerating eggs at or below 40°F (4°C) and discarding any left out for more than 2 hours.

generic

中文

沙门氏菌肠炎菌株在室温（超过40°F/4°C）下可在2小时内于鸡蛋中生长；清洗鸡蛋无法去除通过蛋壳气孔进入的内部污染，USDA建议将鸡蛋冷藏至40°F（4°C）或以下，并丢弃任何放置超过2小时的鸡蛋。

Official Documentation

https://www.fda.gov/food/buy-store-serve-safe-food/egg-safety-what-you-need-know

Workarounds

  1. 95% success Store eggs in the refrigerator at or below 40°F (4°C) immediately after purchase. If eggs are left at room temperature for more than 2 hours (or 1 hour if above 90°F/32°C), discard them. Use a refrigerator thermometer to verify temperature. 
    Store eggs in the refrigerator at or below 40°F (4°C) immediately after purchase. If eggs are left at room temperature for more than 2 hours (or 1 hour if above 90°F/32°C), discard them. Use a refrigerator thermometer to verify temperature.
  2. 90% success For recipes requiring room-temperature eggs, remove eggs from refrigerator immediately before use (not more than 30 minutes) and cook to an internal temperature of 160°F (71°C) for dishes like custards or quiches. 
    For recipes requiring room-temperature eggs, remove eggs from refrigerator immediately before use (not more than 30 minutes) and cook to an internal temperature of 160°F (71°C) for dishes like custards or quiches.
  3. 93% success Use pasteurized shell eggs (look for 'pasteurized' on the carton) for raw or undercooked applications (e.g., Caesar dressing, eggnog), as they are heat-treated to kill Salmonella without cooking the egg. 
    Use pasteurized shell eggs (look for 'pasteurized' on the carton) for raw or undercooked applications (e.g., Caesar dressing, eggnog), as they are heat-treated to kill Salmonella without cooking the egg.

中文步骤

  1. Store eggs in the refrigerator at or below 40°F (4°C) immediately after purchase. If eggs are left at room temperature for more than 2 hours (or 1 hour if above 90°F/32°C), discard them. Use a refrigerator thermometer to verify temperature.
  2. For recipes requiring room-temperature eggs, remove eggs from refrigerator immediately before use (not more than 30 minutes) and cook to an internal temperature of 160°F (71°C) for dishes like custards or quiches.
  3. Use pasteurized shell eggs (look for 'pasteurized' on the carton) for raw or undercooked applications (e.g., Caesar dressing, eggnog), as they are heat-treated to kill Salmonella without cooking the egg.

Dead Ends

Common approaches that don't work:

  1. 95% fail

    Washing eggs removes the protective cuticle and can force bacteria through shell pores into the egg; USDA and FDA advise against washing eggs

  2. 80% fail

    While cooking kills bacteria, toxins produced by Salmonella during growth at room temperature are heat-stable and may survive boiling; also, internal contamination may not be fully eliminated if eggs are undercooked

  3. 90% fail

    Refrigeration stops further growth but does not kill bacteria already present; the USDA recommends discarding eggs left out for more than 2 hours due to potential high bacterial load