"Like to cook" - the second helping

[Inquisitive Raven]

Note that's nutritional yeast which is a different product from the stuff that makes bread rise; for one thing, it's heated before packaging to kill it off. For another, it's more of a brewer's yeast strain than a bread yeast strain. Basically, sometime in the 1960s-1970s, someone noticed that health food nuts were eating the dead yeast leftover from the process of brewing beer and started cultivating it as a food product in itself.

Also, for those who are allergic to pine nuts, pepitas (shelled pumpkin seeds) are listed as an alternative ingredient.