There are stone ground grits, regular grits, and quick-cooking grits. Stone ground grits are the least processed since they are ground literally with stone. They take the longest to cook and have a grittier texture. Regular grits have a medium grind and cook in about 10 minutes. They are the most common! Quick grits or instant grits have the smallest grind and cook in about 5 minutes. You can use whichever of the grits that you like in this easy cheese grits recipe, but stone ground and regular have the most flavor!