Since 'The beast from the east' we've kept a store of food, but only stuff we actually use so can rotate.
Food that can be eaten cold.
Tins of beans and spaghetti - (M&S 50p ones are great).
Corned beef, spam, hot dog sausages.
Tinned fruit, custard, rice pudding.
Cereals.
Loads of bread in the freezer.
Crackers and biscuits.
Powdered milk.
Idahooan mash is pretty good if you can heat water. Same for quick cook pasta.
We have a wood burner with a kettle on it. We always have a lot of wood.
Lots of cold packs in the freezer and a cool box on standby. Cheese/butter is fine out of the fridge for a while but after that I'd put it in the cool box then keep that outside.
We've got some bottled water and loads of starbucks coffee in the glass bottles that don't need a fridge (costco!). I need my coffee.
Wine 🤪
Our electrics are dodgy in heavy rain so we have a cupboard full of candles, matches, powerbanks, a couple of rechargeable lanterns and a fully charged solar/wind up radio/torch combo.
Books, colouring books, art stuff, board games etc in case of boredom.