The can of beans is fine

Every so often a person cleans out a cupboard, finds a can behind the rice, reads a date on it, makes a face, and throws away a perfectly good can of beans.

USDA's Food Safety and Inspection Service addresses this directly in its guidance on shelf-stable food: a shelf-stable product can be safely used after the sell-by date. The can is fine. The can is, if anything, slightly offended.

The date was never the limiting factor

Worth repeating from our piece on date labels: except for infant formula, dates aren't required by federal law and aren't indicators of safety. On a can, that goes double, because nothing dramatic happens to a sealed can on a Tuesday in March.

What does limit a can, per FSIS, is a list of physical things, none of which is a calendar. Cans rust over time. Shipping accidents dent or crush them. And there's corrosion: in all foods, but especially high-acid ones like canned tomatoes, natural chemicals in the food react continuously with the container, and over several years that can change taste and texture and eventually reduce nutritional value.

Read that carefully, because it's a quality clock rather than a safety clock, and it runs in years. The tomatoes are slowly negotiating with the tin. Nobody is in danger. The tomatoes are just getting worse at being tomatoes.

Heat is the actual enemy

This is the part that matters and nobody thinks about, because a pantry feels like a neutral space.

FSIS says temperatures over 100°F are harmful to canned goods, and that the risk of spoilage jumps sharply as storage temperature rises. Canned goods intended for use in the tropics are specially manufactured for it, which tells you the ordinary ones aren't. Their recommendation is a cool, dry place, below 85°F.

Then a specific list of places not to store cans: above or beside the stove, under the sink, in a damp garage or basement, or anywhere exposed to temperature extremes.

So the cupboard directly beside the oven, the one everybody uses for cans because it's convenient to the cooking, is among the worst spots in the house. The garage shelf in August is worse. The two most popular places to keep canned goods are both on the do-not list, which is a fairly impressive outcome.

Rough windows, if you want numbers

FSIS's own storage chart splits it by acidity, which follows from the corrosion mechanism above. High-acid canned foods, meaning tomatoes, grapefruit, pineapple and the like, run roughly 12 to 18 months on the shelf. Low-acid canned foods, meaning most vegetables plus canned meat and poultry, run about two to five years, provided the can stays in good condition and lives somewhere cool, clean, and dry.

Those are quality windows, not expiry cliffs, and the condition of the can matters more than the number.

When to actually throw it out

Here the guidance is firm and I'm not going to be clever about it.

Discard cans that are deeply dented, leaking, bulging, or heavily rusted. Discard cracked jars, jars with loose or bulging lids, and any container that spurts liquid when you open it. A small dent on a can that's otherwise in good shape is fine, per FSIS, and a deep one isn't — a deep dent is one you can lay a finger into, and a sharp dent on a seam is the kind that matters. The same distinction applies to rust: surface rust you can rub off with a paper towel isn't serious and the can is fine to keep, while heavy rust can put tiny holes in the metal. Botulism is a genuine risk in canned goods, which is why these particular signs get a hard rule rather than a judgment call.

And if you suspect something is spoiled, throw it out without tasting it. Tasting is the one check that isn't available.

One more thing people miss: not every canned good is shelf stable. FSIS notes that some canned hams and seafood aren't safe at room temperature at all, and those will be labeled "Keep Refrigerated." The label is the only way to know, so it's worth a glance before something goes in a cupboard for two years.

Two small pieces of housekeeping

Opened cans can go in the refrigerator as-is, per FSIS, though transferring the contents to another container preserves quality and flavor better.

And rotate. Oldest to the front, new stuff behind it. This is the entire pantry management system and it takes the same amount of effort as not doing it, since you're already putting the cans somewhere.

The broader point is that shelf-stable food is the easy part of a kitchen. It's patient, it's forgiving, and it fails slowly and visibly rather than suddenly. It's the one category Savery doesn't need to nag you about, which is why the app cares about the spinach and not the chickpeas.

Move the cans away from the oven. Put the oldest ones in front. Then leave them alone, because they're fine.