5 things that help you eat well when the power’s out

A closed fridge holds a safe temperature for about four hours after the power goes; a full freezer holds for 48 hours, a half-full one for 24. If you open the door constantly to rummage, you burn through that buffer fast. Working through food in a deliberate sequence — fridge first, then the freezer as it starts to thaw, then shelf-stable things last — means you lose almost nothing and eat reasonably well for three days rather than immediately resorting to crackers and despair. The USDA is blunt on this: if food has been above 40°F (4°C) for more than four hours, discard it. The rule applies especially to meat, dairy, cooked leftovers, and anything with eggs. When in doubt, throw it out — food poisoning on top of a power cut is a miserable combination.

People panic about the freezer going, but a full freezer is actually a 48-hour gift if you manage it correctly. The mistake is opening it anxiously every few hours to check, which accelerates the thaw. As things start to thaw over the first day, they're still perfectly safe — and some things (bread, frozen vegetables cooked while still partially frozen, pre-made soups) are better eaten at that point than anything else you have. Canned and shelf-stable food, by contrast, is perfectly happy to wait out the whole event untouched — so eating the freezer strategically on day one or two while it's still genuinely cold means you waste almost nothing.

This is the one piece of kit that genuinely changes the experience — not because you need hot food for survival, but because the psychological weight of three days of cold food is heavier than you'd expect. It makes everything feel more miserable. A compact butane stove (the kind that looks like a little suitcase and costs around £25–30) lets you make pasta, heat tinned soup properly, or boil water for coffee. That matters more than it sounds at 7am on day two. Butane canisters store indefinitely and a single canister lasts several days of careful use. The hard rule: never use it indoors. Carbon monoxide has no smell and will incapacitate you quickly. Outside only, or in a doorway with genuine through-ventilation.

Most people's emergency food stash is a random collection of tins they didn't eat plus stale crackers. The problem isn't quantity — it's that nothing goes together, and by day two you're staring at a tin of chickpeas and a single packet of ramen that requires boiling water you may not have. What you want is a small, coherent pantry: things that combine into actual meals rather than just providing calories in a grim way. Tinned fish eaten cold on bread or crackers is genuinely good. Tinned chickpeas with olive oil and lemon juice becomes a real meal. The key mental shift is thinking in meals, not ingredients — and buying things you'd actually eat on a normal Tuesday.

This sounds obvious until you realise at 6am on day two that you have no way to make hot water. If you have a camping stove, this is trivially solved. If you don't, a wide-mouthed Thermos filled with boiling water right before the power goes out will stay scalding for six hours and warm enough for tea for twelve. I learned this the painful way — I had a perfectly good Thermos and didn't fill it, because I assumed the power would come back. The secondary problem is water in general: in most urban outages, tap water is fine, but if there's any reason to think your supply might be affected, fill every container you have immediately.