Meadow Farms Elk/Beef salami, jerky, and Laughing Cow Babybel cheeses seem to last a long time.
There are also lots of natural veggies to choose from in the mountains. Pussy-Willow stew is an excellent source of protein, but perhaps a little bland.
But seriously, shouldn't a tasty, well-prepared, hot meal be part of the wilderness experience? That's why I carry an Enzo Trapper bushcraft knife for skinning out those little creatures I trap - marmot is a little greasy, but packed with calories. Or try a little belly-tickling trout fishing for some backcountry shushi.
In the interests of ultra-light travel, if someone could come up with a reliable GU I.V. we'd be well on our way to a no-solid-food carry. "Better living through chemistry", I say!
