{
  "id": "food-safety/leftover-rice-reheat-once",
  "signature": "AI tells a user that leftover rice can be safely reheated multiple times as long as it reaches 165°F each time, ignoring the risk of Bacillus cereus toxin formation from repeated cooling and reheating",
  "signature_zh": "AI告诉用户，只要每次加热到165°F，剩饭可以多次安全加热，忽略了反复冷却和加热过程中蜡样芽孢杆菌毒素形成的风险",
  "regex": "reheated multiple times as long as it reaches 165",
  "domain": "food-safety",
  "category": "health_risk",
  "subcategory": null,
  "root_cause": "Bacillus cereus spores survive cooking; repeated cooling and reheating cycles allow spores to germinate and produce heat-stable toxins that are not destroyed by reheating to 165°F, leading to emetic or diarrheal illness",
  "root_cause_type": "generic",
  "root_cause_zh": "蜡样芽孢杆菌孢子能在烹饪中存活；反复冷却和加热循环使孢子萌发并产生热稳定毒素，这些毒素在加热到165°F时不会被破坏，导致呕吐或腹泻",
  "versions": [
    {
      "version": "model",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "platform",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Advise user to reheat rice to 185°F to kill toxins",
      "why_fails": "Bacillus cereus emetic toxin is heat-stable up to 250°F; higher temperature does not destroy it",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "Suggest adding vinegar or lemon juice to rice before storage",
      "why_fails": "Acidity may slow spore germination but does not prevent toxin formation if rice is left at room temperature for extended periods",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "Tell user to freeze rice between uses",
      "why_fails": "Freezing stops germination but does not kill spores; repeated freeze-thaw cycles can still allow toxin production",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Advise user to only reheat leftover rice once. After cooking, cool rice within 1 hour and refrigerate at ≤40°F. Reheat only the portion needed to 165°F, and discard any leftovers after reheating.",
      "success_rate": 0.9,
      "how": "Advise user to only reheat leftover rice once. After cooking, cool rice within 1 hour and refrigerate at ≤40°F. Reheat only the portion needed to 165°F, and discard any leftovers after reheating.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Provide guidance on safe rice storage: portion rice into shallow containers (<2 inches deep) for rapid cooling, label with date, and consume within 3-4 days.",
      "success_rate": 0.85,
      "how": "Provide guidance on safe rice storage: portion rice into shallow containers (<2 inches deep) for rapid cooling, label with date, and consume within 3-4 days.",
      "condition": "",
      "sources": []
    },
    {
      "action": "For meal prep, recommend freezing rice in individual portions immediately after cooking. Thaw in refrigerator and reheat once, discarding any uneaten portion.",
      "success_rate": 0.8,
      "how": "For meal prep, recommend freezing rice in individual portions immediately after cooking. Thaw in refrigerator and reheat once, discarding any uneaten portion.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Advise user to only reheat leftover rice once. After cooking, cool rice within 1 hour and refrigerate at ≤40°F. Reheat only the portion needed to 165°F, and discard any leftovers after reheating.",
    "Provide guidance on safe rice storage: portion rice into shallow containers (<2 inches deep) for rapid cooling, label with date, and consume within 3-4 days.",
    "For meal prep, recommend freezing rice in individual portions immediately after cooking. Thaw in refrigerator and reheat once, discarding any uneaten portion."
  ],
  "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/leftovers-and-food-safety",
  "official_doc_section": null,
  "error_code": "FS-RICE-004",
  "verification_tier": "ai_generated",
  "confidence": 0.87,
  "fix_success_rate": 0.78,
  "resolvable": "true",
  "first_seen": "2024-08-10",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}