I threw out yoghurt yesterday that was two days past its best-before date, then immediately felt guilty about the waste. It looked fine, smelled fine, and probably was fine. But that little date stamp creates anxiety that’s hard to ignore.

Australians throw away $3,000 worth of food per household annually according to research from the NSW Environment Protection Authority, and confusion about date labels is a major contributor. Let’s clear up what these dates actually mean and when food genuinely becomes unsafe.

The Two Types That Matter

Australia uses two main date marking systems: use-by dates and best-before dates. They mean different things, but most people treat them the same.

Use-by dates are about safety. Foods that must be eaten or thrown away by that date include items like fresh meat, fish, prepared salads, and dairy products. After the use-by date, these foods may contain harmful bacteria even if they look and smell normal. Don’t mess with use-by dates on high-risk items.

Best-before dates are about quality, not safety. Bread, biscuits, tinned foods, frozen items – these are safe to eat after their best-before date. They might be stale, less crunchy, or not at peak flavour, but they won’t make you sick. The manufacturer is saying the product is at its best before that date, not that it’s dangerous after.

The confusion comes because both are called “dates” and printed on packaging in similar ways. Your brain doesn’t distinguish between “this might be stale” and “this might make you sick.”

Eggs Are Weird

Eggs in Australia carry best-before dates, not use-by dates. They’re generally safe to eat for weeks after that date if stored properly in the fridge. The float test works: fresh eggs sink in water, older eggs float because the air cell inside grows as moisture escapes through the porous shell.

I keep eggs well past their best-before date regularly. If they pass the float test and don’t smell off when cracked, they’re fine for cooking. I wouldn’t use a month-old egg for a soft poach, but it’s perfectly good in a cake or scrambled.

The freshness matters more for cooking method than safety. Fresh eggs have firmer whites that hold their shape for poaching. Older eggs are easier to peel after boiling because the membrane separates more readily from the shell.

Milk’s Actually Obvious

Milk tells you very clearly when it’s off. It smells sour, tastes bad, and often curdles or separates. You don’t need the date to know. But the use-by date gives you a guideline for when to start being cautious.

Pasteurised milk lasts longer than people think if it’s kept properly cold. The use-by date assumes you’ve stored it at correct refrigerator temperature and haven’t left it sitting out on the bench. If your fridge is warmer than it should be, milk goes off faster regardless of the date.

UHT milk lasts for months unopened because the ultra-high temperature treatment kills all bacteria. Once opened it behaves like regular milk and needs refrigeration and use within a few days.

Bread and Baked Goods

Best-before dates on bread are conservative. Bread doesn’t become unsafe; it goes stale or mouldy. Stale bread is fine for toast or breadcrumbs. Mouldy bread should be thrown out because mould spreads through the loaf even if you only see it on one spot.

Freezing bread before the best-before date extends its life significantly. Defrosted bread isn’t quite the same texture as fresh, but it’s perfectly edible and reduces waste. I freeze bread routinely and pull out slices as needed for toast.

Some people believe bread needs preservatives to last beyond a few days. That’s not true. Proper packaging and storage extend bread life without chemicals. Those soft white loaves that last two weeks are full of preservatives that prevent mould, not because they’re superior bread.

Tinned and Dried Foods

Canned foods are safe for years past their best-before date if the can isn’t damaged, rusted, or bulging. The food inside is sterilised and sealed from bacteria. It might lose some nutritional value or change texture, but it won’t make you sick.

I’ve eaten tinned tomatoes two years past their date. They tasted fine in pasta sauce. Would I eat them plain? Probably not. But cooked into a dish, you can’t tell the difference.

Dried pasta, rice, and grains last almost indefinitely if kept dry and away from pests. The best-before date is mostly about the manufacturer limiting liability. These products don’t spoil in any meaningful way unless exposed to moisture.

Frozen Food Confusion

Frozen food can theoretically last forever because bacteria can’t grow at freezer temperatures. But quality degrades over time from freezer burn, which is moisture loss that makes food dry and tasteless.

Best-before dates on frozen foods are about quality, not safety. Frozen vegetables from two years ago won’t make you sick, but they might be mushy and flavourless when cooked.

Home freezing is less effective than commercial freezing because our freezers go through temperature fluctuations every time we open the door. Properly wrapped food in stable temperatures lasts longer than poorly wrapped food in fluctuating temperatures.

Condiments Last Forever

Sauces, jams, and condiments with high sugar, salt, or acid content are remarkably stable. They might separate, darken, or change consistency, but they rarely become unsafe. The preservative properties of sugar, salt, and acid prevent bacterial growth.

I’ve got soy sauce in my pantry that’s probably three years old. It’s fine. The sodium content makes it basically immune to spoilage. Same with honey, which archaeologists have found edible in ancient Egyptian tombs. Sugar concentration prevents bacterial growth.

Tomato sauce, mayonnaise, and mustard need refrigeration after opening, but they last far longer than their dates suggest if kept cold. I use the smell and visual test. If it looks normal and doesn’t smell off, it’s probably fine.

The Waste Problem

Food waste is a massive environmental and economic issue. We’re throwing away perfectly edible food because dates make us nervous. Manufacturers don’t help by being conservative with dating to avoid liability.

Some countries are simplifying to just two clear labels: “use by” for safety-critical items and “best quality before” for everything else. That linguistic change makes the distinction clearer.

Others are removing dates from long-lasting items like pasta and rice entirely. If a product lasts for years, why print a date that causes people to throw it away unnecessarily?

Trust Your Senses

Your nose, eyes, and taste are better judges of food safety than arbitrary dates for most products. If something smells off, looks wrong, or tastes bad, don’t eat it regardless of the date. If it seems fine and is past its best-before date, it’s probably okay.

Use-by dates on high-risk items like raw meat, seafood, and pre-prepared meals should be respected. These foods can harbour dangerous bacteria that don’t necessarily change the appearance or smell.

The middle ground is meal planning that uses food before dates become an issue. Buy what you’ll actually eat, store it properly, and cook older items first. It’s not complicated, but it requires paying attention to what’s in your fridge.

I’m trying to waste less by being more realistic about what these dates mean. That yoghurt I threw out probably would’ve been fine in a smoothie. But I’ve also learned which items genuinely need to be used quickly and which ones are more forgiving.

The food industry, regulators, and consumers all share responsibility here. Better labelling would help. But ultimately, we need to stop treating best-before dates as hard deadlines and start treating them as guidelines while using common sense.