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How long will Miso keep once opened?

Hi, I recently purchased some Namikura Kyoto-Style White Miso from the Milk Street Store. Once opened, how long will it keep, and what's the best way to store it?

Thank you!


  • Hi Lisa - due to the high salt content of miso it will last indefinitely if stored in the refrigerator. You can rely on the flavor being consistent for about a year, however, any flavor differences that may occur will be fairly imperceptible. Enjoy your miso! Best, Lynn C.

  • Fabulous! Thank you Lynn, that's very helpful! ~Lisa

  • Wow thanks for that information about miso. I’ve been throwing it out after a week.

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