>>1548Hard tack tastes like fucking cardboard, especially after it's really gone dry after a few months. If you want more protein, just get sportsbro whey powder, it carries far easier than people give it credit for.
Survival food in general is just a dumb grift, tinned stores will last as long as you need them to, especially if you cycle and store it properly. But that's cheap and unprofitable, even if you're not a broke bum and go for decent tinned food (eg Stagg Chili) instead of cheapest dogfood you possibly can (which still, is an option).
Hard tack's purpose is to be lightweight and space-conscious carry-food for multi-week hikes (even before modern processed alternatives that can fit in things you don't have as easy access to like different dried fruits), if you're not doing specifically that, don't bother.