How long does polenta last in the refrigerator?

5 to 7 days in the refrigerator, after opening, per the USDA FSIS FoodKeeper dataset. Times assume a refrigerator at or below 40 °F (4 °C).

Can you freeze polenta?

The USDA FoodKeeper dataset lists this storage method as not recommended for polenta.

How long does polenta last in the pantry?

Use by the date printed on the package, per the USDA FSIS FoodKeeper dataset. Assumes a cool, dry pantry away from light.

How long does polenta last after opening?

Once opened — refrigerator: 5 to 7 days, per the USDA FSIS FoodKeeper dataset.

How Long Does Polenta Last?

Shelf Stable Foods · 2 preparations · official USDA FoodKeeper guidance, snapshot 2026-07-24

Type or preparation

Storage method

Polenta — shelf-stable — pantry

Use by the package date

Cool, dry pantry or cupboard
Applies general guideline · shelf-stable

Stored on

No official duration listed for this combination — a date range can’t be calculated. Try another storage method above, or check the package label.

Source: USDA FSIS FoodKeeper (v128, snapshot 2026-07-24) · About this data · Report an issue

FoodStorageCheck — official USDA FoodKeeper guidance · foodstoragecheck.com

All official guidance for polenta

Every storage entry the USDA FoodKeeper dataset lists for this food, exactly as published (v128, snapshot 2026-07-24). “No official duration listed” means the source does not provide a number for that combination — not that the food lasts forever.

Polenta — shelf-stable

Where	Condition	Official time
Pantry	general guideline	Use by the package date
Refrigerator	after opening	5 to 7 days
Freezer	general guideline	Not recommended

Polenta — frozen

Where	Condition	Official time
Refrigerator	after thawing	5 days
Freezer	general guideline	12 months (best quality)

Common questions about polenta

How long does polenta last in the refrigerator?: 5 to 7 days in the refrigerator, after opening, per the USDA FSIS FoodKeeper dataset. Times assume a refrigerator at or below 40 °F (4 °C).
Can you freeze polenta?: The USDA FoodKeeper dataset lists this storage method as not recommended for polenta.
How long does polenta last in the pantry?: Use by the date printed on the package, per the USDA FSIS FoodKeeper dataset. Assumes a cool, dry pantry away from light.
How long does polenta last after opening?: Once opened — refrigerator: 5 to 7 days, per the USDA FSIS FoodKeeper dataset.

Two reminders that apply here

Keep the fridge at 40 °F (4 °C) or below.Refrigerator times in this dataset assume a refrigerator held at or below 40 °F. An appliance thermometer is the reliable way to check.

The two-hour rule.Perishable food left at room temperature for more than 2 hours (1 hour above 90 °F / 32 °C) should be discarded, per FoodSafety.gov. Storage windows assume food was refrigerated promptly.