How long does Textured soy protein (TSP) last after opening?

Updated 2026-08-07 · Free · No sign-up

Once opened, Textured soy protein (TSP) keeps about 3–4 months in the pantry. Unopened, it keeps about 2 years.

Source: USDA FoodKeeper v128 · Category: Vegetarian proteins

How long Textured soy protein (TSP) keeps

SituationKeeps for
Unopened · pantry2 years
Opened · pantry3–4 months

Only situations with a published figure are listed. A blank isn't “forever” — it means no reliable number is published for it.

Storage

How to tell if Textured soy protein (TSP) has gone bad

These are the general spoilage signs for vegetarian proteins — never taste something to test it. When in doubt, throw it out.

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FAQ

How long does Textured soy protein (TSP) last after opening?

About 3–4 months in the pantry, according to USDA FoodKeeper v128.

Does Textured soy protein (TSP) need to be refrigerated after opening?

Textured soy protein (TSP) is shelf-stable at room temperature: cool, dry pantry, sealed — refrigerating after opening is optional and mainly preserves quality. Refrigerating it mainly preserves quality rather than safety.

How can you tell if Textured soy protein (TSP) is bad?

Look for: Sour or off smell; A slimy or sticky surface; Mould or discoloration; Cloudy or fizzing packing liquid. Never taste something to test it — when in doubt, throw it out.

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