Food science, explained.

A floating egg means old, not automatically bad — USDA says it may still be perfectly safe. The float test checks age, not Salmonella.

Opened deli meat is good for 3 to 5 days at 40°F or below, 2 weeks unopened. Why the date resets when you break the seal, and what the Listeria guidance really says.

The fridge is scientifically the worst place for bread — staling peaks at 40°F. Why that happens, the three real exceptions, and how to freeze a loaf properly.

White flour keeps 6-12 months, wholemeal just 1-3 — the oil in the germ decides the clock. The smell test, weevil rules, and why raw flour is the real risk.

Spices don't spoil, they fade. How long whole, ground and blended spices hold their flavour, the real Salmonella and aflatoxin risks, and when to toss a jar.

Ghee lasts a year, atta lasts a month — the real shelf life of 25+ Indian pantry staples, monsoon storage fixes, and FSSAI's aflatoxin limits.

An expired sunscreen usually won't hurt you, but it likely won't protect you either. The 3-year rule, the real signs of spoiled SPF, and what damages the formula.

Olive oil goes off by turning rancid, not on a fixed date. How long it lasts opened and unopened, how to spot rancid oil, and how to store it so it stays fresh.

Why the date is mostly about quality, when past-date powder is fine to finish, and the moisture, mould and pest signs that mean throw it out — whey, plant, collagen and more.

The 3–4 day fridge rule, the 2-hour cooling window, and how to store, reheat and spot spoiled cooked chicken safely.

The 2-hour rule, the 1-hour hot-weather exception, and practical guidance for cooling, storing and reheating cooked rice safely.

Simple storage habits that keep leftovers safer, make food easier to find, reduce spoilage, and save money on groceries.

Honey, salt, sugar, white rice and a handful of others can stay safe to eat almost indefinitely. Here's the science behind why — plus the Indian-kitchen staples no one else covers.