How To Know If Tempeh Is Bad

Tempeh is a fermented soybean cake that is popular in Southeast Asia. It is made by combining cooked soybeans with a fungus, Rhizopus oligosporus, and then incubating it in a warm environment. Tempeh has a nutty flavor and a firm texture. It is a good source of protein, fiber, and minerals.

How To Know If Tempeh Is Bad

There is no one definitive answer to this question. In general, however, if tempeh smells bad or has an off odor, it is likely that it has gone bad and should not be eaten. Additionally, if the tempeh is slimy or feels wet, this may also be a sign that it is no longer fresh. If in doubt, it is always best to discard any tempeh that does not seem safe to eat.

-A refrigerator -A Tempeh container -Tempeh knife -Cutting board -A stove

  • Taste a small piece of tempeh to see if it has a sour or
  • Inspect tempeh for any signs of spoilage, such as mold
  • Smell the tempeh to see if it has an off odor

-The tempeh will have an unpleasant smell. -The tempeh will be slimy or have a strange texture. -The tempeh will be dark in color. -The tempeh will have black spots.

Frequently Asked Questions

What Happens If You Eat Spoiled Tempeh?

If you eat spoiled tempeh, you may experience nausea, vomiting, and diarrhea.

Is Expired Tempeh Safe?

Expired tempeh is not safe to eat. The tempeh will have lost its freshness and may contain harmful bacteria.

How Do I Know If Tempeh Has Gone Bad?

There isn’t a definitive answer, but usually if tempeh smells bad or tastes sour it has gone bad.


Tempeh is a high-protein, fermented food made from soybeans. Fermentation of the soybeans creates a type of mold that binds the beans into a cake-like form. The fermentation process also produces probiotics, which are beneficial bacteria that support gut health. While tempeh is generally considered a healthy food, it can spoil if not stored properly. Signs that tempeh has gone bad include off flavors, slimy texture, and the presence of mold.

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