Does nutritional yeast spoil?

choirgirl

We're out of parmesan cheese and I remembered I had some nutritional yeast in the cupboard, and eons ago when I was vegan I used n.y. in place of parm.  The stuff in the cupboard is newer, but could be 4-5 years old.  Tastes basically right, I can't decide if the slightly off taste means it's off or I'm not used to eating it anymore.

Does anyone know if it spoils, or more specifically, its shelf life?

Zoe'sMama

Haha- I hope someone answers this! I was just wondering about this today!

nsuhomer

It doesn't spoil per se, but the makeup, and in turn the nutrients, diminish after two years in a cool, dark place.  Light, heat, etc. speeds up the process. HTH

choirgirl

Thanks! I ended up dumping it because I finally found online essentially what you said, and I knew it was at least 4 years old (cool dark place tho) and it was only maybe a third of a cup.