How long does sourdough last at room temperature?

Properly stored sourdough lasts 3-5 days at room temperature. The natural acidity helps preserve it longer than commercial bread.

Should I refrigerate sourdough?

Generally no—refrigeration accelerates staling. Store at room temperature for short term, freeze for long term.

Can I freeze sourdough?

Yes. Slice first for convenience, wrap well, and freeze. Toast directly from frozen or thaw at room temperature.

Mold After Baking

Cooling

Sourdough naturally resists mold due to its acidity, but improper storage can still lead to mold growth. Understanding storage prevents this issue.

Try This Right Now

1Discard bread with visible mold—spores spread throughout
2Do not just cut off the moldy part—the bread is contaminated
3Clean bread box or storage container thoroughly

Detailed Solutions

Discard and Clean

Easy

Remove contaminated bread and prevent spread.

Throw away entire loaf
Clean storage container with vinegar solution
Let container dry completely
Store next loaf properly

Proper Storage

Easy

Store bread to prevent mold.

Let bread cool completely before storing
Store in paper bag for crusty bread
Or in bread box at room temperature
Freeze for longer storage

Why This Happens

Mold grows when bread is stored in warm, humid conditions, wrapped while still warm, or kept too long at room temperature. Contributing factors include: Storing bread before fully cooled, Plastic bag trapping moisture, Humid storage environment, Keeping bread too long at room temperature, Cross-contamination from moldy environment.

Prevention for Next Time

Let bread cool completely before storing—at least 2 hours
Store in paper bag or bread box, not sealed plastic
Freeze bread you will not eat within 3-4 days
Keep storage area clean and dry

Related Issues

Having other problems? Check out these related troubleshooting guides.

Soggy Bottom Gummy Interior Cracking Crust Bread Staling