Why did my whole milk curdle and get yucky and smell before my skim milk when left out? I thought it was supposed to be the opposite.

1 Answer 1


Bad luck.

There isn't consensus on which would spoil faster.

Apparently there has been a controlled study that found that skim spoiled faster but the difference was slight. It would have to be in a controlled environment. At home, with all the other variables involved, it would look much more random.

Does whole milk spoil faster than skim milk?

  • 2
    Specifically, spoiling is due to bacterial contamination, so it's all down to what managed to get into the milk when you've opened it, which is completely luck.
    – Cascabel
    Commented Jan 11, 2017 at 19:20
  • 1
    Whoever drinks right from the carton likes whole milk...;-)
    – Ecnerwal
    Commented Jan 13, 2017 at 22:11

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