Camp stoves and charcoal burners. These maybe used outside your home. Never use fuel-burning camp stoves or charcoal burners inside your home, even in a fireplace. Fumes from these stoves can be deadly. Do not cook frozen foods unless you have ample heat for cooking.
Some frozen foods require considerably more cooking time and heat than canned goods.
Also, if power is off, it is best to leave the freezer door closed to keep food from thawing. Commercial canned foods can be eaten straight from the can. Do not use home canned vegetables unless you have the means to boil them for 10 minutes before eating. Conserve Water Save liquids from canned vegetables. Substitute these for water in cooked dishes.