When the power goes out, many will loose the ability to cook, many have electric ovens, even if they have a gas cook top. A barbecue grill can help get you through a power outage, besides, if your refrigerator and freezer go out, might as well cook up your meat.
If you use propane, keep two extra canisters available. In normal cooking, if you only have one canister, the gas has a way of going out half way through a meal. When you have several full canisters you will have fuel for a few days of cooking.
A second option is to use charcoal briquettes as a back up. These are cheep to buy and easy to store. If you plan on keeping for a long time you can seal up in an old trashcan to keep out any moisture. An inexpensive grill, and a few dollars invested in charcoal may be the right ticket to cooking for a while.
A word of caution, even if cold never cook in your garage, the fumes can accumulate and you could create a health, or fire damage. Even in cold weather, just cook outside.
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