Inductive fails when power fails, however. If you have a gas furnace you should consider having a gas stove connected even if you rarely use it - it can provide heat if power fails.

Remember that without power you have no exhaust fan and must ventilate appropriately.

A kerosene heater is a great investment in colder areas, hardware store sealed kerosene will last nearly forever.

No, that is only if you have a solar setup and are efficient enough for offgrid independent electricity. It is a suggestion for people with money to do a setup that doesn’t compromise on modern luxury even in disaster. Given the population here, I figured there are people who can afford that kind of setup; it would be in the range of $75,000 to do properly but do it yourself (so cost of materials).

Without that, the method for heating food I’d use is a propane stove. You can get a single burner for under $30. I always have 4, 5lbs propane canisters with me to cook while traveling. For a house, you can have a large propane tank.