How can you tell if Sour Cream has gone bad?

Signs that Sour Cream has gone bad: Pink or green mold; Watery separation that won't restir, yellow surface; Sharp off smell beyond tangy.

What does the date label on Sour Cream mean?

Sour Cream usually carries a "Use By" date. The last date the manufacturer recommends for peak quality — for most foods this is still quality-based, not a safety cutoff (infant formula is the one exception). See our date-labels guide for the full breakdown.

Dairy

How long does Sour Cream last?

Q: How long does Sour Cream last?

In the fridge: 2–3 weeks. Sealed / unopened: Check date. Don't freeze — texture becomes grainy. Watch for yellow tint or sour smell beyond tangy.

High confidence Safety concern

How long does Sour Cream last? fridge 2–3 weeks. Plus spoilage signs, sources, and an unopened-vs-opened note.

Fridge

2–3 weeks

Pantry

Refrigerate only

Freezer

Not recommended

Sealed / unopened: Check date

Signs Sour Cream has gone bad

Pink or green mold.
Watery separation that won't restir, yellow surface.
Sharp off smell beyond tangy.

Discard immediately if

Visible mold on the lid or rim
Smells distinctly sour even without warming
Texture has separated into solids and liquid that won’t mix back

Why guidance varies

Dairy spoilage depends on initial pasteurization, fridge temperature, and how often the container is opened; manufacturer-printed dates assume continuous storage at 40°F (4°C) or below.

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Sources for this answer

A USDA FoodKeeper — Storage windows and refrigeration guidance for this category.
A USDA FSIS — Food Product Dating — Date-label interpretation and food-safety baseline.

Reviewed: 2026-05 · Rule: if manufacturer storage instructions are stricter than category guidance, the manufacturer instructions win.