What you might want are Tanka Bars, buffalo meat with cranberries. They are essentially pemmican, and fairly high on protein. I find them very tasty and a nice mix with Clif bars, which I can consume without any issues.

They have a fairly tough packaging (like Clif bars) so they can inhabit the recesses of your pack until needed.

They are produced by a Native American outfit on the Pine Ridge Reservation, South Dakota. Their product seems to be catching on and is now carried by REI. Buy in a minimum of twenty to get a price discount. If you want to "Buy American" you can't do better than these.

I have no commercial connection - just a satisfied user. They are the perfect energy boost when digging fossils.