The power goes at two in the afternoon and comes back a little after six. Somewhere in that gap your fridge stopped being a fridge. Inside it is last night’s qeema, half a jug of milk, and a bowl of rice you were planning to finish today. Summer food safety comes down to one question at that moment: how long was the food warm, and how warm did it get?
You do not have to guess. Food safety agencies publish the actual numbers, and they are simpler than you would expect.
Summer food safety starts with the four-hour window
A refrigerator keeps food safe for up to four hours during a power cut, according to FoodSafety.gov. The word doing the work in that sentence is closed. Every time the door opens, the cold air falls out and the clock speeds up. If load-shedding is scheduled, decide before the power goes what you actually need from the fridge, take it out in one trip, and leave the door shut after that.
Treat four hours as a ceiling rather than a promise. That figure comes from guidance written for temperate kitchens. A room sitting at 40°C or more will pull heat into your fridge faster than a mild one, so a four-hour outage in June is not the same as a four-hour outage in February.
The rule that matters after the power returns is about temperature, not the outage itself. Perishable food — meat, fish, eggs, milk, cut fruit, cooked leftovers — should be thrown out once it has been at 4°C (40°F) or above for more than two hours. The CDC puts the same rule the other way round: discard perishables after four hours without power or without a cold source such as ice.
Two hours on the table, one hour when it is really hot
Food does not need a power cut to go wrong. The US Food and Drug Administration calls 4°C to 60°C (40°F to 140°F) the “Danger Zone”, the range where bacteria multiply fastest, and advises that perishable food should not sit in it for more than two hours.
Above 32°C (90°F), that limit drops to one hour.
For most of the country, for most of the summer, you are in the one-hour bracket. Picture a family lunch that starts at one o’clock, in a room that is comfortably past 34°C. The biryani, the raita and the salan go on the table. People eat, talk, get up, come back. By two o’clock that food has used its hour. Not “it will make you ill” — but it is past the point where the guidance says keep it.
The practical version: put out what people will eat now, keep the rest covered in the fridge, and refill the serving dish instead of leaving the whole pot out for three hours.
Rice gets its own rule
Rice is the food most likely to catch people out, and it is worth knowing why the advice is stricter. The UK Food Standards Agency’s guide to food safety says leftover rice should be cooled as quickly as possible, ideally within one hour, kept in the fridge for no more than one day, and eaten within 24 hours of cooking.
When you reheat it, reheat it once only, and heat it until it is steaming hot all the way through.
Notice what that advice is built around. It is about how fast the rice cools, not how hot you get it later — reheating is not a reset button. This is the one place where “it smelled fine, so I ate it” is a genuinely bad test. A pot of chawal left on the stove overnight, then fried up the next evening, is the classic version of the mistake.
Cooling food fast in a hot kitchen
General leftovers get a slightly gentler rule: cool them and get them into the fridge within one to two hours, and eat them within 48 hours or freeze them. But a deep pot of daal in a 35°C kitchen will not cool in two hours by sitting there. It will hold its heat for most of the evening.
So help it. Divide hot food into a few shallow containers instead of leaving it in one tall pot. Spread it out rather than stacking it. More surface area means faster cooling, and faster cooling is the whole point of the rule.
While you are at it, check what your fridge is actually running at. The FSA advises a fridge should sit between 0°C and 5°C. A cheap fridge thermometer settles the question in a way that the dial on the back never will, particularly on an older unit that has been through a few summers of voltage fluctuation.
The same page gives the safest way to defrost: overnight in the fridge, so the food never passes through the danger zone on its way to being thawed. Use it within 24 hours once it is fully defrosted.
Your freezer is the buffer
A full freezer holds safe temperatures for about 48 hours without power. A half-full one manages around 24. Both figures assume the door stays closed.
That gap is a useful piece of summer food safety in itself: a packed freezer holds its cold roughly twice as long as a half-empty one, so filling the gaps — bottles of water work — buys you time you would otherwise lose.
When the power returns, food that still contains ice crystals, or that is at 4°C or below, can be refrozen. The quality will suffer, but it is safe. Anything that has fully thawed and warmed past that point should not go back in.
A day in front of the cricket
Long days are where these rules quietly get broken. A Test match is five sessions of sitting down, and food that goes out with the first ball is still out at tea. If you are settling in to watch a batsman like Usman Khawaja grind through a session, plate up in rounds instead of laying everything out at eleven in the morning. The same logic applies to a long drive, a picnic, or any afternoon where the food outlasts the appetite.
One last thing, and it is the rule every agency repeats: never taste food to check whether it is still good. Tasting tells you nothing useful and costs you plenty if you are wrong. FoodSafety.gov’s phrasing is hard to improve on — when in doubt, throw it out.
Photo by cottonbro studio on Pexels
