Long ago, I determined that the thing I would miss most in a no-supplies-available situation would be cheese. I stumbled across this post by Simple Bites. Aimee gives a step-by-step process to make mozzarella cheese in just 30 minutes. The hitch? You need some pretty specific supplies: citric acid, rennet, and heat proof gloves. In my opinion, these supplies (and skills) are worth having on hand for many possible emergency situations anyway. Hope you enjoy!