EGGS! I love love love eggs. I love them so much, I had to get into raising my own chickens.
Even at $4 a dozen, that's protein for SIX meals, at less than $.70 per serving (2 eggs). Chicken, beef-- hell, even tofu can't even touch that.
I eat two eggs a day on average--but then, I raise my own chickens. That's the way to go, if you ask me.

--Cat