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Plant milk

How can you store and use leftover nut milk?

Quick answer

USDA's FoodKeeper lists Soy or rice beverage: after opening, 7 to 10 days in the refrigerator | Soy milk: after opening, 7 to 10 days in the refrigerator; unopened, until the package use-by date in the refrigerator. FoodKeeper lists soy or rice beverages, not leftover nut milk, so these are the closest official entries.

Refrigerator, after opening7 to 10 days
SourceUSDA FoodKeeper v128
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In this article
  1. Contents
  2. What USDA FoodKeeper says
  3. Storage tips
  4. When to throw it out
  5. Conclusion

The short answer: USDA’s FoodKeeper lists Soy or rice beverage: after opening, 7 to 10 days in the refrigerator | Soy milk: after opening, 7 to 10 days in the refrigerator; unopened, until the package use-by date in the refrigerator. FoodKeeper lists soy or rice beverages, not leftover nut milk, so these are the closest official entries.

Contents

  1. What USDA FoodKeeper says
  2. Storage tips
  3. When to throw it out
  4. Conclusion

What USDA FoodKeeper says

FoodKeeper is the storage guide from the USDA Food Safety and Inspection Service. The figures below are read from the data file (version 128, last modified 6 September 2018 in the file’s version table). “From date of purchase” means counted from the day you bought it.

Soy or rice beverage

Where How long
Refrigerator, after opening 7 to 10 days

Soy milk

Where How long
Refrigerator, unopened until the package use-by date
Refrigerator, after opening 7 to 10 days
  • Keep refrigerated.

Storage tips

Keep leftover nut milk in the place and container the package says. FoodKeeper gives no extra tip for this entry.

When to throw it out

These signs are our general advice, not an agency rule. An off or sour smell, mould, an unusual texture, or a swollen or leaking container means it should go in the bin. Do not taste it to check.

Conclusion

USDA’s FoodKeeper lists Soy or rice beverage: after opening, 7 to 10 days in the refrigerator | Soy milk: after opening, 7 to 10 days in the refrigerator; unopened, until the package use-by date in the refrigerator. FoodKeeper lists soy or rice beverages, not leftover nut milk, so these are the closest official entries. Check the date on your package and throw it out if in doubt.

General information, not medical advice. When in doubt, throw it out. If you are pregnant, elderly, or have a weak immune system, follow the date on the package and ask your doctor.

People also ask

How long does leftover nut milk last?

USDA's FoodKeeper lists Soy or rice beverage: after opening, 7 to 10 days in the refrigerator | Soy milk: after opening, 7 to 10 days in the refrigerator; unopened, until the package use-by date in the refrigerator. FoodKeeper lists soy or rice beverages, not leftover nut milk, so these are the closest official entries.

How should I store leftover nut milk?

Follow the package. FoodKeeper gives no extra storage tip for this entry; our general advice is a clean, closed container and the right temperature for the product.

How can I tell if leftover nut milk has gone bad?

Our general advice, not an agency rule: an off or sour smell, mould, unusual texture or a swollen or leaking container means throw it out. Do not taste it to check.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. USDA FSIS FoodKeeper data, version 128 (English), as downloaded 1 November 2026
Written by Drinks Type Editorial Team · Published Sep 14, 2025 · Updated Nov 1, 2026
About · How we verify this · Editorial policy · Corrections

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