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spazita Jun 13, 2011 07:54 AM

Hi fellow CH-ers! How can you tell if buttermilk is still good to use?


  1. k
    kathleen440 Jun 13, 2011 08:07 AM

    It will eventually mold, but that takes a long time, at least 4-6 weeks. Open it up and smell/take a look; if it's still uniformly white and smells sour but not moldy/funky, you're good to go. (And be sure to shake it before using!)

    1 Reply
    1. re: kathleen440
      Karl S Jun 13, 2011 12:22 PM

      And, if you keep it in a glass milk bottle and shake it from time to time, it can last for months past the sell-by date. I never have a problem.

    2. jmcarthur8 Jun 13, 2011 10:53 AM

      Don't worry, Taz, you'll know when it's bad. It will smell like sour milk. Buttermilk is tangy, but has a sweet milk smell.

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