From my personal experience: There are a good number of… well basically self-taught witches, who use menstrual blood (among other things) for various rituals and spells and hexes, and some of that eventually evolved into cooking.

From elsewhere: All around the world, there are various traditions, folk religion, local superstitions, most of which are quite niche, but simultaneously a lot of them also have rituals involving consumption of menstrual blood or food made with it for varying reasons.