Holiday baking and big family dinners send shoppers down the canned goods aisle for pumpkin, cranberry sauce, evaporated milk, broth and green beans. Before any of those cans go into the cart, University of Missouri Extension advises choosing ones that are not rusted, dented, scratched or bulging.
The same extension guidance says any can or jar at home with a broken seal, rust, bulging or denting should be thrown out, along with any food that does not look or smell right. A quick check at the shelf, and another at the pantry, keeps a damaged can from ending up in a pie or casserole.
The Store-Shelf Checklist
According to University of Missouri Extension, buying canned goods starts with a good-quality product, which means passing over any can that is rusted, dented, scratched or bulging. Clemson Cooperative Extension adds a practical step for dented cans: check them for leaks and rust before buying.
In practice, that adds up to a short list for each can in the cart:
- No bulging or swelling at the top or bottom of the can.
- No rust, especially along the rims and seams.
- No signs of leaking.
- No deep dents or scratches that cut into the metal.
Ready.gov, the federal preparedness site, takes the same line for food that is already at home, listing among its “don’ts” eating from cans that are swollen, dented or corroded, even when the product inside may look fine. Holiday shopping often means grabbing two or three of the same item at once, and lining them up in a well-planned cupboard using these kitchen organization ideas makes a damaged one easier to spot later.
Why the Seal Matters So Much
A can only works as long as its seal holds. The history of canning traces back to French confectioner Nicolas Appert, who observed that food cooked inside a sealed jar did not spoil unless the seal leaked. That basic principle explains why a bulging lid or a leaking seam is still seen as a warning sign today.
Clemson’s Home and Garden Information Center says a bulging lid or leaking can is a sign of spoilage. When opening a can, Clemson advises watching for spurting liquid, an off odor or mold, and it says foods showing any of those signs should not be tasted or used. Rust matters for the same reason, according to Clemson, since rust can lead to leaks.
The Ready.gov food guidance also recommends keeping a manual can opener with stored food, and building what it calls “at least a several-day supply” of non-perishable food. A pantry stocked with cans that pass the shelf check is a good start, and it is the same kind of backup supply that families relied on in these kitchen staples grandmothers kept within arm’s reach.
How Long Holiday Cans Keep at Home
Stocking up early only works if the cans last until they are needed. Missouri Extension says commercially canned low-acid foods, such as meat and vegetables, should be used within 2 to 5 years, while high-acid foods such as tomatoes and fruit have a shorter shelf life of 12 to 18 months. Clemson recommends using commercially processed cans within two years of purchase for the best quality.
Missouri recommends labeling each can with its purchase date and following the FIFO method, short for first-in, first-out, so the oldest cans are used first. That habit helps when the pantry fills up ahead of Thanksgiving on Nov. 26 and stays full through the December holidays. It also helps keep grocery spending in check at a time when holiday bills are weighing on American households, since a forgotten can at the back of the shelf is money spent twice.
Easy-to-read labels and stackable organizers, like the ones in this roundup of products that simplify everyday life at home, can make a rotation system simple to keep up. The same first-in, first-out thinking works in the refrigerator, where opened leftovers belong, and it is easier with these essential refrigerator items already in their places.
Where to Store Them
Location matters as much as the condition of the can. Missouri Extension says canned goods belong in a cool, dark, dry area away from furnaces, pipes and other places where temperatures change. It also recommends keeping metal cans off the floor, because moisture there can lead to rust.
Clemson puts numbers on the guidance, recommending storage between 50 and 70 degrees Fahrenheit and noting that storage time drops when temperatures are above 75 degrees. It advises keeping cans away from hot pipes, the range, the furnace and direct sunlight. The National Center for Home Food Preservation gives similar advice for home-canned jars, saying they should be stored in a clean, cool, dark, dry place between 50 and 70 degrees.
Home canners have one more thing to watch. The center says dampness may corrode metal lids and break seals, and it recommends storing jars without their ring bands, which makes a broken vacuum seal easier to spot. It also says jars should not be stored above 95 degrees or in an uninsulated attic, where food can lose quality within weeks or months.
When to Throw a Can Out
The extension rules for home are short. Missouri says any can or jar with a broken seal, rust, bulging or denting should be discarded, and any food that does not look or smell right should be thrown out. Clemson adds spurting liquid, an off odor and mold to the list of signs that mean the contents should not be tasted or used.
Taken together, the guidance gives holiday shoppers a simple rule for the season: inspect cans before buying, store them cool and dry, use the oldest first, and let any can with a bulge, leak or heavy rust go in the trash rather than the recipe.
This article was produced with AI assistance and edited for accuracy against the sources linked above.
Image: photoheuristic.info from Frankfurt a. M., Germany – CC BY 2.0/Wikimedia Commons
