How To Tell If Your Sourdough Starter Is Bad

A sourdough starter is a mixture of flour and water that is used to make sourdough bread. A starter that is not used regularly can go bad. Signs that a starter is bad include an increase in mold, a sour smell, and a slimy texture. If your starter is bad, you should discard it and start over with a new batch.

How To Tell If Your Sourdough Starter Is Bad

If your sourdough starter is bad, it will not ferment and will not rise. It will also have a sour smell.

-Sourdough starter -A scale that can measure in grams -A container to store your starter in

  • Check the starter’s smell. a bad starter will smell rank or sour
  • Check the starter’s taste. a bad starter will taste sour
  • Check the starter’s consistency. a bad starter will be thick and gummy

If your sourdough starter has an unpleasant smell, it is likely bad. If the starter is visibly moldy or contains any other signs of spoilage, it is also likely bad. If your starter doesn’t rise or develop any bubbles after a few days, it might be bad. Another way to tell if your starter is bad is by tasting it – if it tastes sour and acidic, it’s likely still good. However, if the starter tastes off or bland, it might be


Frequently Asked Questions

What Does Bad Sourdough Starter Smell Like?

BAD sourdough starter smells like vomit.

Can Sourdough Starter Have Botulism?

There is a very small risk of botulism from sourdough starter, but it is highly unlikely. Botulism is caused by a bacterium that can contaminate food and lead to a serious, sometimes fatal, illness. The bacterium is killed by heat, so properly cooked sourdough starter is not a risk for botulism.

Can Bad Sourdough Starter Make You Sick?

There is no evidence to suggest that bad sourdough starter can make you sick. However, if the starter is not handled correctly it can become a breeding ground for bacteria, which could potentially cause food poisoning.


In Summary

There are a few key things to look out for when determining whether or not your sourdough starter is bad. If it’s emitting a rank smell, has a slimy texture, or is covered in mold, then it’s likely gone bad and should be discarded. However, if your starter is still bubbly and active, it’s likely still good to use.

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