protein
I've given up on protein shakes for now because they "thicken" up when and cause nausea. I'm using Q-Smart, Momentum, and Carbwell protein bars, whatever is on sale. I try to keep the cost between .85 and 1.25 for the top end of cost. It bothered me for a while until I realized I never hesitated to buy a candy bar or bag of chips everyday. The cost of that old junk food was always more than I pay for a daily protein bar or two.