Freeze dried foods last the longest and taste almost like fresh, but also cost more than twice as much as dehydrated foods. Dehydrated foods might be the best for your excursions, since they’re compact. While conventional canned foods are easiest to stock up on, they also don’t have a long shelf life.
You could use this info. as a types of Emergency Foods Guide or your Survival Kit Guide for going hiking. The graph below compares canned, dehydrated, and freeze dried foods.
Since the world’s oldest kefir cheese was found in a tombs of some 3 600 years old mummies in Xinjiang, China. And milk residues have also been found in the remains of 8 000 year old pottery from Turkey's Anatolia region. So if you get lost and mummified, your food will probably still be good...