Carbonfiberboy 

Absolutely true. That's the reason than the early polar explorers took pemmican with them. In their time, pemmican was bear fat mixed with berries. I'm sure we'd all eat it if we were out on the ice and that's all there was. However we cyclists aren't sledging our supplies over ice ridges and thus weight per calorie makes no difference. In terms of weight, our caloric needs are vastly less than our need for water. In fact many of us can ride for hours without refueling. So your fact, while correct, is of no interest whatsoever to cyclists, whatever their dietary practices.

That said, is it possible that you're planning a multi-week cycling tour, stopping only to sleep, carrying all your food with you? Pemmican would be a good choice. Doesn't even need to be heated. You need to know a successful bear hunter though. The berries are to prevent scurvy, necessary even though they decrease the calories per pound