Once opened, Lemon juice (beverages) keeps about 2 months in the fridge. Unopened, it keeps about 12–18 months.
2 months opened in the fridge, against 12–18 months sealed in the pantry. Green is what this situation leaves you; husk is what it spends.
| Situation | Keeps for |
|---|---|
| Unopened · pantry | 12–18 months |
| Opened · fridge | 2 months |
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 2 months refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128. Refrigerate it once it's open.
Yes — keep Lemon juice (beverages) at 40°F (4°C) or below once it's open. Cool, dry pantry unopened; refrigerate at 40°F (4°C) or below after opening.
Look for: Sour or off smell; Cloudiness, sediment, or curdling; Fizzing in a still drink, or a swollen carton or can; A bitter or 'off' first sip. Those are the general signs for beverages — USDA FoodKeeper v128 publishes no spoilage note for Lemon juice (beverages) specifically. Never taste something to test it — when in doubt, throw it out.