Second the recommendation for Tanka bars. Unlike many of the packaged bar products, these pack a lot of protein, and I have a hankering for buffalo - real tasty stuff. Only drawback is that they are pricey, currently listing at $3 a bar. I just ordered a box from REI - in quantity I get a 20% discount. They do have a "best by" date,but i have consumed several that were years past their date,and they were excellent, still.