Technically, They're the edible spore-generating part of the fungi household Tuberaceae. Tuberaceae are not tubers but are formed like tubers and is as little being an acorn or as massive being an orange. Truffles — which develop underground near the roots of particular trees, specifically oak, all over central Europe https://mushroomchocolates.us/product/neuro-mood-250mg-caps-microdose-mushrooms/