Look at the ingredient list. If you see just “corn” or “de-germed corn meal,” you’re golden. Some brands add niacin, iron, and folic acid. That’s just the government being extra nice.
What about those gritty, sandy bits you sometimes get? That’s the germ. Or tiny bits of the hull. It’s not dirt. It’s character.
And yes, there are quick-cooking grits. These are a middle ground. They’re cut finer than stone-ground but not as processed as instant. They cook in about 5-10 minutes. Decent choice for a Tuesday.