Well, I could use low-fat but my reason for asking is that I forgot to get milk at the store. I bought buttermilk to make some cornbread tomorrow. Then after I got home, I realized that mashed pot. would be good with tomorrow's dinner, too. I'll pick some up tomorrrow.
As far as mixing stuff in- I normally put a few dashes of garlic powder and grated cheddar cheese. Bacon bits and chives or chopped green onion are good in there, too!