Once opened, Milk (ultra-pasteurized) keeps about 7–10 days in the fridge. Unopened, it keeps about 1–3 months.
7–10 days opened in the fridge, against 1–3 months sealed in the fridge. Green is what this situation leaves you; husk is what it spends.
| Situation | Keeps for |
|---|---|
| Unopened · fridge | 1–3 months |
| Opened · fridge | 7–10 days |
Air and warmth are what shorten an opened item's life — the right container buys back the days the packaging gives up once the seal's broken.
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About 7–10 days refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128. Refrigerate it once it's open.
Yes — keep Milk (ultra-pasteurized) at 40°F (4°C) or below once it's open. Refrigerate at 40°F (4°C) or below.
Look for: A rancid, paint-like, or musty smell; Bulging, leaking, deeply dented, or rusted cans; Insects or webbing in dry goods; Mould or discoloration. Those are the general signs for pantry staples — USDA FoodKeeper v128 publishes no spoilage note for Milk (ultra-pasteurized) specifically. Never taste something to test it — when in doubt, throw it out.