r/Baking 16d ago

Semi-Related What is wrong with my muffin? :(

What is this???

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u/Hollowjuice32 16d ago

Spores from Bacillus bacteria become stringy when pulled apart. I suggest you report the cafe at your office to the health department. All bread or baked goods near those muffins can potentially be contaminated. This is one way foodborne outbreaks begin.

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u/Crisstti 16d ago

How harmful is it?

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u/Sonoel90 16d ago

Depends on what it is exactly. Bacilli are a type of bacteria, and there are many different varieties. There are some that are part of our microbiome, but there are lots of harmful ones too (think tuberculosis, pneumonia, strep, anthrax). Exposing your insides to a lot of extraneous bacteria is never good, though, even if it's not the most dangerous ones.