How long does Cottage cheese last after opening?

Updated 2026-08-07 · Source: USDA FoodKeeper · Free · No sign-up

Once opened, Cottage cheese keeps about 5–7 days in the fridge. Unopened, it keeps about 1–2 weeks.

Source: USDA FoodKeeper · hand-checked · Category: Dairy & eggs

How long Cottage cheese keeps

Situation	Keeps for
Unopened · fridge	1–2 weeks
Opened · fridge	5–7 days

Only situations with a published figure are listed. A blank isn't “forever” — it means no reliable number is published for it.

Store at: Refrigerate at 40°F (4°C) or below
Refrigerate after opening: Yes — refrigerate at 40°F (4°C) or below
Tip: USDA FoodKeeper lists 2 weeks from purchase unopened and about 1 week once opened; we show the practical 5–7 day range after opening, since the tub is opened partway through. Freezing works but turns it grainy — best for cooking only.

These are the general spoilage signs for dairy & eggs — never taste something to test it. When in doubt, throw it out.

How long does Cottage cheese last after opening?

About 5–7 days refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper. Refrigerate it once it's open.

Does Cottage cheese need to be refrigerated after opening?

Yes — keep Cottage cheese at 40°F (4°C) or below once it's open. Refrigerate at 40°F (4°C) or below.

How can you tell if Cottage cheese is bad?

Look for: Sour or off smell; Watery or yellowing; Mold on the surface; Bitter taste. Never taste something to test it — when in doubt, throw it out.