In Asia, oxen typically do the threshing by trampling the rice laid out before them. Milling then removes each grain's hull to reveal the part of the rice plant that eventually ends up in our mouths.

And 5 To Avoid Rice is a grain that is composed of a white kernel (or endosperm) and germ, the bran (an edible outer layer which can be black, brown, purple, or red), and the indigestible shell ...