Soy flour (full-fat) keeps about 6 months in the fridge at 40°F (4°C) or below, counting from the day you bought it.
That's the longest window published for Soy flour (full-fat) — sealed in the fridge is its best case.
| Situation | Keeps for |
|---|---|
| Unopened · pantry | 2 months |
| Unopened · fridge | 6 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 6 months 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.
Soy flour (full-fat) is 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: Sour or off smell; A slimy or sticky surface; Mould or discoloration; Cloudy or fizzing packing liquid. Those are the general signs for vegetarian proteins — USDA FoodKeeper v128 publishes no spoilage note for Soy flour (full-fat) specifically. Never taste something to test it — when in doubt, throw it out.