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Milk types

How long does recombined milk last?

Quick answer

USDA's FoodKeeper lists Milk (plain or flavored): unopened, until the package use-by date in the refrigerator; 3 months in the freezer. FoodKeeper lists milk (plain or flavored), not this exact type, so this is the closest official entry.

Refrigerator, unopeneduntil the package use-by date
Freezer, from date of purchase3 months
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
  6. How long does powdered milk last once mixed with water?
  7. Does powdered milk go bad after mixing?
  8. How long does the dry powder last?

The short answer: USDA’s FoodKeeper lists Milk (plain or flavored): unopened, until the package use-by date in the refrigerator; 3 months in the freezer. FoodKeeper lists milk (plain or flavored), not this exact type, so this is the closest official entry.

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.

Milk (plain or flavored)

Where How long
Refrigerator, unopened until the package use-by date
Freezer, from date of purchase 3 months

Storage tips

Keep recombined 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 Milk (plain or flavored): unopened, until the package use-by date in the refrigerator; 3 months in the freezer. FoodKeeper lists milk (plain or flavored), not this exact type, so this is the closest official entry. 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.

How long does powdered milk last once mixed with water?

About 5 days in the refrigerator. NDSU Extension’s Food Storage Guide lists “homogenized, reconstituted dry nonfat, skimmed” milk at 5 days in the refrigerator, with the note: “Keep containers tightly closed. To prevent spoilage, don’t return unused milk to original container.” The guide covers nonfat dry milk, so do not assume the same figure for whole milk powder.

Does powdered milk go bad after mixing?

Yes, mixed milk is perishable, so keep it cold and covered. Use our spoilage signs above: an off or sour smell, a changed texture or a swollen container means throw it out.

How long does the dry powder last?

USDA’s FoodKeeper lists powdered milk at 3 to 5 years in the pantry, “based on cool temperatures, dark storage,” and says it “may spoil as quickly as 3 months in hot temperatures.” After opening the package, it lists 3 months in the pantry.

People also ask

How long does recombined milk last?

USDA's FoodKeeper lists Milk (plain or flavored): unopened, until the package use-by date in the refrigerator; 3 months in the freezer. FoodKeeper lists milk (plain or flavored), not this exact type, so this is the closest official entry.

How should I store recombined 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 recombined 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.

How long does mixed powdered milk last in the fridge?

NDSU Extension lists reconstituted dry nonfat milk at 5 days in the refrigerator, in tightly closed containers.

How long does powdered milk last unopened?

USDA FoodKeeper lists 3 to 5 years in the pantry in cool, dark storage, and as little as 3 months in hot temperatures.

Can you pour leftover mixed milk back into the original container?

NDSU Extension advises against returning unused milk to the original container, to prevent spoilage.

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
  2. NDSU Extension: Food Storage Guide (FN579, reviewed Jan. 2023), read 5 Nov 2026
  3. USDA FSIS: FoodKeeper data, Powdered milk entry (data file version 128), read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Aug 4, 2025 · Updated Nov 5, 2026
About · How we verify this · Editorial policy · Corrections

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