Plantains keep about 3–5 days in the fridge at 40°F (4°C) or below, counting from the day you bought them. Frozen, they keep about 10–12 months.
| Situation | Keeps for |
|---|---|
| Unopened · pantry | Until ripe, then refrigerate |
| Unopened · fridge | 3–5 days |
| Freezer | 10–12 months |
About 3–5 days at 40°F (4°C) or below, according to USDA FoodKeeper v128. That window runs from the day you bought it — FoodKeeper publishes no separate after-opening figure for this one.
Plantains are shelf-stable at room temperature: cool, dry pantry, or refrigerate at 40°F (4°C) or below to keep it longer. Refrigerating it mainly preserves quality rather than safety.
Look for: Mould or fuzzy spots; Mushy, collapsed, or leaking areas; A fermented or alcohol-like smell; Slimy skin. Never taste something to test it — when in doubt, throw it out.
Yes — USDA FoodKeeper v128 gives about 10–12 months in the freezer at 0°F (−18°C). Frozen food stays safe indefinitely; that window is about quality, not safety.