I thought the white grits that seem to be more common in the US were made from hominy...I know that's just corn processed with an alkali, but I thought real grits just had to be made from hominy.
Never heard of hominy until a good friend of mine who grew up on a farm in MO served them to me...I liked them, but it took me a while to figure out that they were really corn. I thought it was a new grain I'd never heard of...