What is the 15 15 15 rule for coffee?
What is the 15 15 15 rule for coffee? In any case this has me reconsidering the rule of fifteens, that green coffee is stale after 15 months, roasted coffee is generally stale after 15 days, ground coffee is stale after 15 minutes, and espresso is stale after 15 seconds. The rule goes like this: […]
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