# AI tells a user that cheese made from raw (unpasteurized) milk is safe to eat if aged for more than 60 days

- **ID:** `food-safety/ai-says-raw-milk-cheese-is-safe-if-aged-over-60-days`
- **Domain:** food-safety
- **Category:** health_risk
- **Error Code:** `FDA-RAWMILKCHEESE-006`
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

FDA regulation (21 CFR 133) requires raw-milk cheese aged at least 60 days at a temperature above 35°F to reduce pathogen risk, but studies show that certain pathogens like Listeria monocytogenes and E. coli O157:H7 can survive in aged raw-milk cheese beyond 60 days, especially if moisture and pH conditions are favorable.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| FDA 21 CFR 133.150-133.196 | active | — | — |
| FDA Raw Milk Cheese Guidance 2023 | active | — | — |

## Workarounds

1. **Purchase only pasteurized-milk cheese from reputable sources; check the label for 'pasteurized milk' or 'made with pasteurized milk'. For raw-milk cheese, buy from licensed producers who follow FDA aging requirements and store at proper temperatures (50-55°F, 85-90% humidity).** (90% success)
   ```
   Purchase only pasteurized-milk cheese from reputable sources; check the label for 'pasteurized milk' or 'made with pasteurized milk'. For raw-milk cheese, buy from licensed producers who follow FDA aging requirements and store at proper temperatures (50-55°F, 85-90% humidity).
   ```
2. **If you must consume raw-milk cheese, choose hard cheeses like Parmesan or aged Gouda that have lower moisture content (<40%) and higher salt, which further inhibit pathogen survival. Avoid soft-ripened raw-milk cheeses like Brie or Camembert even if aged 60 days.** (80% success)
   ```
   If you must consume raw-milk cheese, choose hard cheeses like Parmesan or aged Gouda that have lower moisture content (<40%) and higher salt, which further inhibit pathogen survival. Avoid soft-ripened raw-milk cheeses like Brie or Camembert even if aged 60 days.
   ```

## Dead Ends

- **** — Home refrigerators are too cold for proper aging; 60-day aging requires temperatures above 35°F (usually 50-55°F) to allow beneficial bacteria to outcompete pathogens, but home conditions often inhibit this. (85% fail)
- **** — Pathogens like Listeria and E. coli do not cause visible spoilage or odors; cheese can look and smell fine while still containing harmful bacteria. (95% fail)