Cultured buttermilk tastes a lot like cottage cheese to me, but with a little more zing. I love the stuff (especially with salt and pepper). I haven't had it since starting Atkins, but it may be a decent maintenance food, used in moderation.

It is a little carbier than milk: one cup has 12.99 grams of carbs, 10 grams of protein, and 441 mg of potassium.

Uncultured buttermilk, the kind you get if you make cream into butter, doesn't have much flavor at all.