<< Corn is treated with lime prior to grinding in order to make grits. Not so with cornmeal or polenta. Polenta is generally a different grind of corn than is meal, and the "heart" is usually removed from the kernal for polenta (aesthetics only). But, yes, all three may often be used interchangably.... Matt>> Matt, Our favorite Polenta is the stone ground red corn from La Morra (Cuneo) Italia and is much finer in texture and taste and could never be confused with grits or cornmeal. LOL Especially w/freshly grated Reggiano-Parmesano & Porcinis &/or a drizzle of white truffle oil or even a blessing of Habanero oil. :-) Mangia-mangia Mary-Anne