Strangely enough, this works in Finnish too:
Uida - to swim
Uittaa - to make someone or something swim
Uitattaa - to make someone make someone swim
Uitattattattattattattattattattaa - to make someone make someone make someone … make someone swim
It's almost as if they are related languages or something.
NandGame is a browser puzzle game, where you start of by building basic logic gates from relays and progress from there all the way trough processor design to compiling high-level languages. It does not hold your hand too much, but the invidual puzzles progress so incrementally, it feels almost magical how easily you learn to build computers and compilers.
The goal of such recommendations is not to ensure people can survive 72 hours without access to additional supplies, but to ensure that the society as a whole can function at such a situation - that requires a lot more than just a drop of water and barely enough calories to stay alive. If the enemy can collapse your society just by destroying a couple of power plants and water treatment facilities, you've already lost the war. Or climate change, or blizzard or what ever it is you are facing.
That being said, I do agree that the food you store doesn't need to be anything special or tasty - just something to keep you working your job and taking care of those that depend on you.