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what is the 15-15-15 rule for coffee?

  • The 15-15-15 Rule for Coffee Freshness

    The 15-15-15 Rule for Coffee Freshness

    15-15-15 rule coffee: Learn the 15-15-15 rule for coffee freshness: 15 months for green beans, 15 days peak flavor, 15 minutes from grind to brew.