How Long Does Yogurt Last?
By James OkaforReviewed 2026-01-01
Yogurt keeps 1–2 weeks past its date unopened and about a week once opened, stored at 40°F or below. It freezes for 1–2 months but turns watery — fine for baking and smoothies. Mold, a yeasty smell, or separation that won't stir back means it's bad.
Yogurt is tougher than it looks. Because it is already fermented and acidic, it holds up in the fridge for a week or two past its printed date — far longer than the milk it came from. Most "bad" yogurt is actually just old, and old yogurt is usually still fine.
The catch is that yogurt does not always announce spoilage loudly. Mold can grow quietly on the surface, and an off smell can be masked by the yogurt's natural tang. So the rules are: keep it cold, keep it clean, and use your eyes before your nose.
How long yogurt lasts
| Storage method | Duration | Best practice |
|---|---|---|
| Fridge (unopened) | 1–2 weeks past printed date | Fridge at 40°F or below |
| Fridge (opened) | About 1 week | Use a clean spoon; reseal promptly |
| Room temperature | 2 hours max | Discard after the limit |
| Freezer | 1–2 months (best quality) | Expect watery, grainy texture when thawed |
Storage conditions for yogurt
The fridge shelf, not the door, is where yogurt lives longest — the door's temperature swings stress the culture. Keep the lid sealed and the container away from the door even after opening.
Two small habits extend opened yogurt significantly. First, always use a clean, dry spoon: backwash from a used spoon introduces bacteria that culture over the days you plan to keep eating it. Second, store the cup upside down after opening — the trapped yogurt at the lid creates a seal that keeps mold from forming on the surface.
Storage tip
Turn opened yogurt cups upside-down in the fridge. It is the single most effective trick for keeping the surface mold-free and stretching an opened cup to a full week. ::
How to tell yogurt has gone bad
Start with your eyes. A thin layer of clear liquid on top is normal — that is whey, and you stir it back in. What is not normal: fuzzy mold patches on the surface, especially pink or green, which mean the entire cup goes out. A watery layer that will not stir back into the yogurt is another sign the culture is breaking down.
Then the smell. Yogurt's natural tang is sharp and clean; spoilage smells sour, yeasty, or fermenting in a way that makes you pull back. If it looks right and smells right, a quick taste will confirm — spoiled yogurt tastes unmistakably off.
Warning
Never scrape mold off yogurt and eat the rest. Yogurt is moist and loose, so mold spores travel through the whole container. Any visible mold — even a small patch — means throw it all away. ::
Does yogurt freeze well?
For cooking, yes; for eating straight, no. Yogurt freezes safely for 1–2 months, but freezing breaks the gel structure, so thawed yogurt is watery and grainy. Blend it into smoothies, bake it into quick breads, or use it in marinades, where the texture disappears. Freeze in an airtight container with an inch of headroom — yogurt expands. Thaw in the fridge, stir well, and use it within a few days.
See the refrigerator storage guide and the food safety temperature guide for the rules behind these times.
Frequently asked questions
How long does yogurt last after the expiration date?
Unopened yogurt keeps 1–2 weeks past its printed date in a fridge at 40°F or below, and opened yogurt about 1 week. Yogurt is acidic and cultured, so it naturally resists spoilage longer than milk. The date is peak-quality guidance — check for spoilage signs rather than trusting the calendar.
Can you freeze yogurt?
Yes, yogurt freezes safely for 1–2 months, but freezing separates the water and breaks the culture's texture, so thawed yogurt turns watery and grainy. It is fine for baking, smoothies, and marinades — not great eaten plain. Freeze in an airtight container with headroom, and thaw in the fridge.
How can you tell if yogurt is bad?
Look and smell. Spoiled yogurt has visible mold on top, a watery separation that does not stir back together, or a sour, yeasty, or fermented smell that is stronger than yogurt's natural tang. If the top has pink or green mold patches, discard the whole container — never scoop them off.
Why does yogurt get watery on top?
That clear liquid is whey, the protein-rich liquid that naturally separates from the milk solids. It is harmless and normal — stir it back in. Excessive whey in a container you have had a while simply means the yogurt is older; it is not a spoilage sign by itself. Pair it with the smell test.
How should yogurt be stored?
Keep yogurt refrigerated at 40°F or below, ideally on a middle shelf rather than the door. Store it upside-down in its sealed cup to create a vacuum that keeps mold out, or use a clean spoon every time. Replace the lid promptly, and never return a used spoon to the container.
Sources
Shelf-life and temperature claims on this page are cited from tier-1 food-safety authorities. Always confirm current guidance before relying on dated information.
Written by
Senior food storage writer
Writer covering food storage shelf life, storage methods, and kitchen organization.
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