# AI tells a user that sous-vide cooking at 130°F (54°C) for 2 hours is safe for beef, ignoring the risk of Clostridium botulinum

- **ID:** `food-safety/sous-vide-beef-130f-2hrs`
- **Domain:** food-safety
- **Category:** life_threatening
- **Error Code:** `BOT-130`
- **Verification:** ai_generated
- **Fix Rate:** 82%

## Root Cause

Clostridium botulinum spores survive at 130°F (54°C) and require temperatures above 250°F (121°C) under pressure (canning) or extended times below 40°F (4°C) to prevent toxin production; sous-vide at 130°F for 2 hours does not reach the time-temperature combination needed to kill spores or prevent germination.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| USDA FSIS Sous-Vide Guidelines 2023 | active | — | — |
| FDA Food Code 2022 | active | — | — |
| Anova Culinary App v3.2.1 | active | — | — |

## Workarounds

1. **For beef, cook sous-vide at 131°F (55°C) for at least 3 hours (for steaks up to 2 inches thick) to achieve pasteurization; use a calibrated immersion circulator and verify temperature with a secondary thermometer. Example: `sous-vide --temperature 131 --time 3h --thickness 2in beef_steak.txt`** (85% success)
   ```
   For beef, cook sous-vide at 131°F (55°C) for at least 3 hours (for steaks up to 2 inches thick) to achieve pasteurization; use a calibrated immersion circulator and verify temperature with a secondary thermometer. Example: `sous-vide --temperature 131 --time 3h --thickness 2in beef_steak.txt`
   ```
2. **If cooking below 131°F, limit sous-vide time to less than 2 hours and immediately sear and serve; do not hold at low temperatures for extended periods. Use a food-safe timer: `timer 1h45m && sous-vide --temperature 130 --time 1h45m beef.txt`** (75% success)
   ```
   If cooking below 131°F, limit sous-vide time to less than 2 hours and immediately sear and serve; do not hold at low temperatures for extended periods. Use a food-safe timer: `timer 1h45m && sous-vide --temperature 130 --time 1h45m beef.txt`
   ```
3. **For ground beef or other high-risk cuts, cook sous-vide at 155°F (68°C) for at least 1 minute to ensure pathogen kill; this also makes the meat well-done but safe** (70% success)
   ```
   For ground beef or other high-risk cuts, cook sous-vide at 155°F (68°C) for at least 1 minute to ensure pathogen kill; this also makes the meat well-done but safe
   ```

## Dead Ends

- **** — USDA's 130°F minimum is for immediate consumption with a rest time, not for extended holding; spores survive and can germinate if held too long at that temperature (95% fail)
- **** — Garlic and herbs do not provide enough acidity or antimicrobial activity to prevent C. botulinum growth in low-acid foods (98% fail)
- **** — Searing only kills surface bacteria, not any toxin already produced inside the meat; botulinum toxin is heat-labile but requires 185°F for 5 minutes to denature, which searing doesn't achieve internally (90% fail)