Guides › How long does food last › Polenta, shelf-stable
How long does polenta, shelf-stable last?
Polenta, shelf-stable keeps for about — in the freezer. Counted from when you open or store it, unless the package says otherwise.
| Where | How long |
|---|---|
| Refrigerator, after opening | 5 to 7 days |
Storage times are the USDA FoodKeeper guidance for quality and safety, not a guarantee; a printed use-by date on the package comes first. Source: USDA FSIS FoodKeeper (CC0), fetched 2026-10-27, category Shelf Stable Foods.
How Known uses thisWhen a receipt lists polenta, shelf-stable, Known estimates an expiry from the purchase date and typical shelf life and shows which rule it used, for example "7-day rule". Shelf-stable staples get no date at all.
Stop finding it in the back of the fridge
One receipt photo, and every grocery line gets an estimated use-by date and a reminder. No account, nothing to type.
Open Known, it is freeMore in Shelf Stable Foods
Applesauce, commercial12 to 18 monthsBacon bits, imitation1 yearCanned goods, low acid (such as meat, poultry, fish, gravy, stew, soups, beans, carrots, corn, pasta, peas, potatoes, spinach)2 to 5 yearsCanned goods, high acid (such as juices, fruit, pickles, sauerkraut, tomato soup, and foods in vinegar-based sauce)12 to 18 monthsCereal, ready-to-eat6 to 12 monthsCereal, cook before eating (oatmeal, etc.)12 monthsChocolate syrup2 yearsCrackers8 monthsGraham cracker/animal cracker6 to 9 monthsFruits, dried, raisins, apricots, mangoes, cranberries, etc.6 monthsGummy (fruit) snacks6 to 9 monthsMarshmallows1 year