Before I was vegan I had no idea what nutritional yeast was and now I eat it all day, every day.
Nurtritional yeast a deactivated yeast -- meaning unlike regular yeast it doesn't make things rise so don't use it in baking.
Nutritional yeast is high in protein and most brands also fortify it with B12 and other vitamins and minerals. and did I mention it tastes CHEESY?
Nutritional yeast is commonly used in vegan recipes to replace a cheese taste. For example, I use it in all of my cheese recipes in the Happy Herbivore Cookbook and in my recipe for Mac n' cheese here on the blog. I also use it in my tofu scramble. and I put it on my tomato soup...and and and
I'm really addicted to it and put it on everything! It's great on popcorn or greens like kale. Slip it in to your mashed potatoes...
The first few times I tried it I thought it was a little weird and smelly but now I'm totally obsessive. I could eat it with a spoon all day long. So give it a few tries if you're not sold the first time.
I like Red Star and Brags brands best. You can find nutritional yeast at Whole Foods, health food stores and places that sell supplements like GNC or the Vitamin Shoppe. I buy mine in 3 or 5lb bags from bulkfoods.com.
Me and my 3lbs of nutritional yeast that arrived yesterday!