From Habr:

Conservancy: That is what can be. But I prefer not the canned foods themselves, but the knowledge of how to make them on the knee.
Yyy: Well, if there is something to do with these canned foods – then and do them, in principle, it will not be very necessary. Or do you want to prepare your own conserve stock in advance?
What does it mean – not very much? Here is the northern foul fox. The cow turned. What will you do? Cut a piece, right? Do not eat immediately.
zzz: Wearing a two-legged, carefully sewn cow on a cart... I am a doctor, I can’t make canned foods)