live out of cans
To survive off of nonperishable food contained in sealed tin cans. The electricity has been down for weeks, meaning we can't keep any food in the fridge or cook anything on the stove, so we're living out of cans for the time being.
live out of cans
Fig. to eat only canned food. You have to have some fresh fruit and vegetables. You can't just live out of cans. We lived out of cans for the entire camping trip.