It’s Doomsday Clock time again. On Jan. 26, the Bulletin of the Atomic Scientists moved its annihilation estimation to 2.5 minutes to midnight, meaning the group believes we’re closer to oblivion that we’ve been since 1953-60. This ritual has been going on since 1947. That’s 70 years of scary (and sometimes less than scary) analyses of global threats.
For global catastrophic risks the costs of food storage become impractical for most of the population [53] and for some such catastrophes conventional agriculture would not function due to the loss of a large fraction of sunlight (e.g. during nuclear winter or a supervolcano). In such situations, alternative food is necessary, which is converting natural gas and wood fiber to human edible food.[54]
It’s impossible to carry all the food you will need for a week unless you’re eating very high density proteins like nuts.  Nuts and dried meat are two of the easiest off-the-cuff meals.  Canned food has a lot of water that is wasted during the cooking process.  Stay away from heavily flavored or salted nuts.  The amount of salt present in the unsalted nut mixes is still sufficient enough to replace electrolytes.