Does nutritional yeast expire or go bad? I have a tub of nutritional yeast with a "best by" date of February 2012 (at the time of this posting, it's about a month past that). Is it still good to use? It still looks and smells the same as it always has.

In general, what is the shelf life of nutritional yeast?

Does nutritional yeast ever expire or otherwise go bad? Or just lose nutritional value?
Your question: is it good to use. My answer: yes.


You say it smells and looks normal. That's an important clue.
We are talking about a dry product. No moist means no growth, no toxins...
Best before date. Wikipedia: 



  Most shelf life dates are used as guidelines based on normal and expected handling and exposure to temperature. Use prior to the expiration date does not necessarily guarantee the safety of a food or drug, while a product is not always dangerous nor ineffective after the expiration date