{
  "id": "food-safety/ai-says-frozen-food-thawed-on-counter-is-safe-if-cooked-immediately",
  "signature": "AI tells a user that frozen meat thawed on the kitchen counter for 4 hours is safe to cook and eat if cooked to the proper internal temperature",
  "signature_zh": "AI告诉用户，在厨房台面上解冻4小时的冷冻肉如果烹饪到合适的内部温度，可以安全食用",
  "regex": "(?i)(thaw.{0,10}(on|counter|room temp|room temperature)).{0,40}(cook|safe|ok|immediately)",
  "domain": "food-safety",
  "category": "health_risk",
  "subcategory": null,
  "root_cause": "Frozen meat thawed at room temperature can enter the 'danger zone' (40-140°F) within 2 hours, allowing bacteria like Salmonella and E. coli to multiply exponentially; even thorough cooking kills bacteria but not heat-stable toxins already produced.",
  "root_cause_type": "generic",
  "root_cause_zh": "在室温下解冻的冷冻肉可能在2小时内进入“危险温度区”（40-140°F），使沙门氏菌和大肠杆菌等细菌呈指数级繁殖；即使彻底烹饪可以杀死细菌，但无法破坏已经产生的耐热毒素。",
  "versions": [
    {
      "version": "USDA Safe Thawing Guidelines 2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "FDA Food Code 2022",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Cold water method requires water temperature below 70°F and water changes every 30 minutes; otherwise, water warms and surface of meat enters danger zone.",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Microwave thawing often partially cooks outer layers, creating hot spots; letting it sit allows bacteria to multiply in those warm areas.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Thaw frozen meat in the refrigerator: place on a tray to catch drips, allow 24 hours per 5 pounds (2.3 kg). Once thawed, cook within 1-2 days. For faster thawing, submerge sealed package in cold tap water, changing water every 30 minutes, and cook immediately after thawing.",
      "success_rate": 0.95,
      "how": "Thaw frozen meat in the refrigerator: place on a tray to catch drips, allow 24 hours per 5 pounds (2.3 kg). Once thawed, cook within 1-2 days. For faster thawing, submerge sealed package in cold tap water, changing water every 30 minutes, and cook immediately after thawing.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Cook frozen meat directly without thawing: increase cooking time by 50% and use a meat thermometer to verify internal temperature (e.g., 165°F for poultry, 160°F for ground meats, 145°F for whole cuts with 3-minute rest).",
      "success_rate": 0.9,
      "how": "Cook frozen meat directly without thawing: increase cooking time by 50% and use a meat thermometer to verify internal temperature (e.g., 165°F for poultry, 160°F for ground meats, 145°F for whole cuts with 3-minute rest).",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Thaw frozen meat in the refrigerator: place on a tray to catch drips, allow 24 hours per 5 pounds (2.3 kg). Once thawed, cook within 1-2 days. For faster thawing, submerge sealed package in cold tap water, changing water every 30 minutes, and cook immediately after thawing.",
    "Cook frozen meat directly without thawing: increase cooking time by 50% and use a meat thermometer to verify internal temperature (e.g., 165°F for poultry, 160°F for ground meats, 145°F for whole cuts with 3-minute rest)."
  ],
  "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/safe-thawing",
  "official_doc_section": null,
  "error_code": "USDA-THAWING-005",
  "verification_tier": "ai_generated",
  "confidence": 0.89,
  "fix_success_rate": 0.85,
  "resolvable": "true",
  "first_seen": "2024-02-28",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}