Food Storage Guide: How Long Does Everything Actually Last?

The distinction between 'best before' and 'use by' dates is one of the most important and least understood aspects of food safety. Use-by dates are safety dates — they indicate the point at which the food may become unsafe to eat, even if it looks and smells fine. Use-by dates appear on perishable, high-risk foods: raw meat, fish, soft cheeses, and ready-to-eat products that require refrigeration. Eating food past its use-by date is a genuine food safety risk and should be avoided.

Best-before dates, by contrast, are quality dates — they indicate when the food may begin to deteriorate in flavour, texture, or appearance, but do not indicate a safety threshold. Food past its best-before date is almost always safe to eat, simply potentially less enjoyable. Best-before dates appear on tinned goods, dried pasta, biscuits, cereals, frozen food, and most ambient products. Supermarkets and food banks regularly donate food past its best-before date because it remains perfectly edible.

Display-until and sell-by dates are not for consumers at all — they are stock management instructions for retailers. You can safely ignore them. The practical upshot: trust your senses (smell, appearance, texture) for best-before foods and treat use-by dates on high-risk perishables as genuine limits. When in doubt about any food, the UK Food Standards Agency rule is simple: if in doubt, throw it out.

Raw poultry (chicken, turkey, duck) has the shortest safe fridge life of any common protein: 1–2 days from purchase. If your use-by date is three days away and you will not cook it within two days, freeze it immediately. Raw red meat (beef, lamb, pork) lasts 3–5 days in the fridge. Raw fish and seafood: 1–2 days — treat it like poultry. Smoked fish is more stable and lasts 2 weeks or until the use-by date.

Dairy requires more nuance. Full-fat, pasteurised milk lasts 5–7 days after opening (the acidity of full-fat milk inhibits bacterial growth slightly better than semi-skimmed). Hard cheeses (cheddar, parmesan, pecorino) last 3–4 weeks after opening if well-wrapped. Soft cheeses (brie, camembert, ricotta, cream cheese) last 5–7 days after opening. Butter lasts 3 weeks after opening in the fridge; salted butter lasts longer than unsalted. Eggs: in the UK and most of Europe, fresh eggs can be stored at room temperature or in the fridge for up to 3 weeks after the best-before date. In the US, where eggs are washed and refrigerated from the start, keep refrigerated and use within 3–5 weeks of purchase.

Cooked food stored in the fridge: most cooked meals last 3–4 days. Soups and stews are at the more stable end (4 days); cooked fish and seafood at the less stable end (2–3 days). Cooked rice is a special case — rice can harbour Bacillus cereus spores that survive cooking; refrigerate within an hour of cooking and use within 24 hours.

Approximately 40% of the vegetables and fruit purchased in UK homes are wasted — most of it due to incorrect storage. The fundamental error is refrigerating everything: many fruits and vegetables actually deteriorate faster in the cold than at room temperature, and some are actively harmed by refrigeration.

Do not refrigerate: tomatoes (cold destroys their flavour and produces a mealy texture), avocados until ripe (ripen on the counter; refrigerate once ripe to extend by 1–2 days), stone fruits (peaches, plums, nectarines; ripen on the counter), bananas (cold turns the skin black), garlic (cool, dry, dark place; lasts months), onions (same as garlic, keep away from potatoes), potatoes (cool, dark, ventilated; never the fridge — cold converts starch to sugar), and most citrus (room temperature is fine for 1–2 weeks; refrigerate for longer storage).

Do refrigerate: all leafy greens (in a sealed bag or container with a paper towel to absorb moisture), cruciferous vegetables (broccoli, cauliflower, cabbage; 5–7 days), carrots and parsnips (keep in the fridge, lasts 2–3 weeks), celery (wrap in foil, not plastic — the foil allows ethylene gas to escape and keeps it crispy for 3–4 weeks), berries (dry, unwashed, on a paper towel in an open container; 3–5 days), and grapes (wash just before eating, store unwashed in their bag).

A well-managed pantry is an excellent food safety buffer — pantry staples provide the base for meals when fresh ingredients are depleted. Understanding true pantry shelf life prevents both unnecessary waste (throwing away perfectly good staples past their best-before date) and genuine spoilage (forgetting that certain pantry items do have real limits).

Tinned goods with high acidity (tomatoes, fruit, pickles) last 12–18 months at best quality but are safe indefinitely if the tin is undamaged (no dents on the seams, no rust, no swelling). Low-acid tinned goods (beans, lentils, vegetables, fish) last 2–5 years at best quality. Dried pasta and rice last 2–3 years when stored in airtight containers away from light and moisture. Flour has a genuine limit: white flour lasts 6–12 months; wholemeal flour lasts only 3–6 months (the bran contains oils that go rancid). Store flour in an airtight container.

Oils and fats have significant variation. Refined olive oil and vegetable oil last 12–18 months unopened, 6–12 months after opening. Extra-virgin olive oil has a shorter shelf life (best consumed within 6 months of opening) due to its higher antioxidant and phenol content — store in a dark, cool place, never next to the hob. Honey never spoils — archaeologists have found 3,000-year-old honey in Egyptian tombs that was still edible. Granulated sugar and salt last indefinitely. Spices and dried herbs do not become unsafe, but volatile oils responsible for flavour dissipate over time — ground spices are best replaced after 1 year, dried herbs after 6 months.

Eggs are one of the most confusing foods for storage advice, partly because guidance differs significantly between countries. The classic float test is a useful indicator: a fresh egg sinks horizontally in water; an egg a week or two old tilts up slightly (as the air cell inside grows); an egg that floats has a large air cell and should be discarded. This test works because eggs become less dense as they age, but it is not a precise safety test — a floating egg is definitely past its best, but a sinking egg is not definitively safe if stored incorrectly.

Bread stales primarily through starch retrogradation — a structural change in the starch molecules that makes the crumb firm and dry. This process is actually fastest at refrigerator temperatures, which is why storing bread in the fridge makes it go stale faster, not slower. The choice is between room temperature (keeps fresh for 2–5 days depending on type and humidity) and the freezer (slice first; keeps for 1–2 months). Never the fridge.

Leftovers are the food category with the highest food safety risk due to the variety of ingredients involved and the variable cooling and reheating practices of home cooks. The critical rules: refrigerate within two hours of cooking (one hour if the ambient temperature is above 32°C / 90°F); store in shallow containers to allow rapid cooling; reheat only once to piping hot (minimum 74°C / 165°F throughout); consume within 3–4 days; and never leave hot food in the oven on a low temperature to 'keep warm' for more than one hour.