What are the black spots on the millet? Why not on the rice?

"planting umbilical cord" Umbilical cord: It is a scar left by the seed falling off the stem or placenta after maturity, which is often round or oval. Usually what we use to make millet is "millet" without shell, which is called "caryopsis" academically. In the process of hulling millet, the germ is removed with the hull, leaving only the endosperm. In fact, we only eat a part of millet seeds. And that dot should be the part where the stem or placenta was connected at the beginning, so I think it is more appropriate to call it "navel". That little black dot is Xiaomi's navel! ~。