If you write the respective brands they will send a single sample.Palatability varies considerably,but in a survival scenario you would supplement with gathered plant,insect and animal resources.Their main attraction is nutrition and weight with long shelf life.I also carry a can of sardines(great trap and fishing bait if local resources are plentiful),trail mix and pemmican which are rotated.For pemmican take lean ,jerked meat,dried berries and a clear,fresh,rendered fat.Pound meat and berries and then mix in fat and allow to solidify.Cowboys and soldiers in the civil war relied on hardtack of corn or wheat.My saddler is in possession of such a biscuit authenticated as going up San Juan Hill with a rough rider!<br><br>