The Difference Between Cornmeal, Grits, and Polenta

I eat a lot of corn and corn products. I love cornbread, corn casserole, cornmeal-crusted catfish, grits, and polenta, and consider those last two to be distinct dishes. Much like pornography and erotica, it can be hard to delineate the differences between polenta and grits, but I can identify either on sight (or…