Question: is there a difference between nutritional yeast and baking yeast?
Answer: Nutritional yeast is a food additive made from a single-celled organism, Saccharomyces Cerevisiae, which is grown on molasses and then harvested, washed, and dried with heat to kill or “deactivate” it. Because it's inactive, it doesn't froth or grow like baking yeast does so it has no leavening ability.