How to Tell If Milk Has Gone Bad: Signs to Look For

Learn how to check if milk is spoiled by smelling, looking for clumps, tasting, and checking the expiration date.

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Video transcript

Check the smell of the milk; if it has a sour or off odor, it’s likely bad. Look at the texture; clumping or curdling indicates spoilage. Taste a small amount to confirm; if it tastes sour, discard it. Additionally, observe the expiration date; milk past this date may be spoiled.

Questions and answers

  1. What are the common signs that milk has gone bad?

    Common signs include a sour or off smell, clumpy or curdled texture, sour taste, and milk that is past its expiration date.

  2. Can you drink milk after the expiration date?

    Milk may still be safe if it smells and tastes normal, but it's best to carefully check for any sour smell or curdling before consuming.

  3. How long does milk last after opening?

    Generally, milk stays fresh for 5-7 days after opening if refrigerated properly, though spoilage signs should always be checked.

  4. What causes milk to spoil quickly?

    Improper refrigeration, exposure to air, and contamination can cause milk to spoil faster than normal.