Just learned this last year!

Flour doesn’t look like a raw food, but most flour is raw. That means it hasn’t been treated to kill germs that cause food poisoning, such as Escherichia coli (E. coli) and Salmonella. These harmful germs can contaminate grain while it’s still in the field or flour while it’s being made. Steps like grinding grain and bleaching flour don’t kill harmful germs—and these germs can end up in flour or baking mixes you buy at the store. You can get sick if you eat unbaked dough or batter made with flour containing germs. Germs are killed only when flour is baked or cooked.

CDC investigated outbreaks linked to raw flour or cake mix in 2016, 2019, 2021, and 2023.

-see dee see

I wouldn‘t put raw flour under „non poisonous calories“ and I guess one does not heat treat the flour they want to eat, when high.

Flour is specifically why you’re not supposed to eat the cookie dough. It can contain E. coli.