The WillItExpire Blog
Food science, explained.
Storage guides, shelf-life deep dives and the food science behind why some things last forever while others go off in days.
Food Safety · Defrosting
How to Defrost Meat, Chicken and Fish Safely
Choose a thawing method, then know when to cook, keep refrigerated or refreeze. Includes vacuum-packed fish handling.
Food Safety · Leftovers
Can You Put Hot Food in the Fridge?
Yes, in small portions. Safe cooling steps, shallow containers, and the two-hour rule with its hot-weather exception.
Quality · Safety · Inventory
Food Safety · Date Labels
Best By vs. Use By vs. Expiration Date
What each date means, when it is about safety, why opening the package changes the clock, and what California changed in 2026.
Food Safety · Milk
Does Milk Expire?
What Sell-By, Best By, and Use-By mean—and how cold storage, package condition, and local rules change the answer.
Food Safety · Eggs
Do Floating Eggs Mean Bad Eggs?
A floating egg means old, not automatically bad — USDA says it may still be perfectly safe. The float test checks age, not Salmonella.
Meat & Fish · Deli Meat
How Long Does Deli Meat Last?
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.
Baked Goods · Bread
Should Bread Be Refrigerated?
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.
Pantry · Flour
Does Flour Expire?
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.
Pantry · Spices
Do Spices Expire?
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.
Pantry · Indian Staples
Indian Pantry Storage Guide
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.
Household · Sunscreen
Does Sunscreen Expire?
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.
Pantry · Olive Oil
Does Olive Oil Expire?
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.
Supplements · Protein Powder
Does Protein Powder Expire?
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.
Food Safety · Cooked Chicken
How Long Does Cooked Chicken Last?
The 3–4 day fridge rule, the 2-hour cooling window, and how to store, reheat and spot spoiled cooked chicken safely.
Food Safety · Cooked Rice
How Long Can Cooked Rice Sit Out?
The 2-hour rule, the 1-hour hot-weather exception, and practical guidance for cooling, storing and reheating cooked rice safely.
Fridge · Freezer · Pantry
Food Storage · Waste Less
Store Food Better and Waste Less
Simple storage habits that keep leftovers safer, make food easier to find, reduce spoilage, and save money on groceries.
Food Science · Pantry Staples
Foods That Never Expire (and Why): A Science-Backed Guide
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.
Coming up next
Indian Pantry Storage Guide
Coming soon
Freezer Storage: The Complete Guide
Coming soon