{
  "id": "food-safety/ai-advises-reheating-leftover-pizza",
  "signature": "AI tells a user that leftover pizza left out overnight (12 hours) is safe to eat if reheated in the oven at 350°F (177°C) for 10 minutes",
  "signature_zh": "AI告诉用户，如果放在外面过夜（12小时）的剩披萨在177°C的烤箱中加热10分钟，就可以安全食用",
  "regex": "pizza.*left.*out.*overnight.*safe|reheat.*pizza.*morning.*safe",
  "domain": "food-safety",
  "category": "health_risk",
  "subcategory": null,
  "root_cause": "The USDA Danger Zone (40°F-140°F / 4°C-60°C) allows food to sit out for no more than 2 hours total; after 12 hours, pathogenic bacteria like Staphylococcus aureus, Bacillus cereus, and Salmonella can produce heat-stable toxins that are not destroyed by reheating to 350°F.",
  "root_cause_type": "generic",
  "root_cause_zh": "美国农业部危险温度区（4°C-60°C）规定，食物在室温下放置不得超过2小时；12小时后，金黄色葡萄球菌、蜡样芽孢杆菌和沙门氏菌等病原菌会产生耐热毒素，即使加热到177°C也无法破坏。",
  "versions": [],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Reheating to 350°F kills bacteria but does not destroy pre-formed toxins (e.g., staphylococcal enterotoxin) that cause vomiting and diarrhea within 2-6 hours.",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Using a microwave to reheat fails because it heats unevenly, leaving cold spots where bacteria can survive.",
      "fail_rate": 0.65,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Checking if the pizza smells or looks fine fails because toxin-producing bacteria do not always cause visible spoilage or odor.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Follow the 2-hour rule: refrigerate leftover pizza within 2 hours of cooking. If left out for more than 2 hours, discard it. To reheat safely, use an oven at 375°F (190°C) for 5-7 minutes or a skillet on medium heat until the cheese is bubbly and the internal temperature reaches 165°F (74°C).",
      "success_rate": 0.95,
      "how": "Follow the 2-hour rule: refrigerate leftover pizza within 2 hours of cooking. If left out for more than 2 hours, discard it. To reheat safely, use an oven at 375°F (190°C) for 5-7 minutes or a skillet on medium heat until the cheese is bubbly and the internal temperature reaches 165°F (74°C).",
      "condition": "",
      "sources": []
    },
    {
      "action": "If you must leave pizza out for a party, keep it in a chafing dish or warming tray above 140°F (60°C). Alternatively, serve it within 2 hours and refrigerate the rest immediately.",
      "success_rate": 0.9,
      "how": "If you must leave pizza out for a party, keep it in a chafing dish or warming tray above 140°F (60°C). Alternatively, serve it within 2 hours and refrigerate the rest immediately.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Follow the 2-hour rule: refrigerate leftover pizza within 2 hours of cooking. If left out for more than 2 hours, discard it. To reheat safely, use an oven at 375°F (190°C) for 5-7 minutes or a skillet on medium heat until the cheese is bubbly and the internal temperature reaches 165°F (74°C).",
    "If you must leave pizza out for a party, keep it in a chafing dish or warming tray above 140°F (60°C). Alternatively, serve it within 2 hours and refrigerate the rest immediately."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/danger-zone-40f-140f",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.87,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-08-22",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}