Coffee beans can only be kept fresh for 1 to 7 days after roasting, and then they will begin to lose flavor, leaving only bitter taste, but no mellow taste. However, freshly fried coffee beans are not suitable for immediate drinking and should be stored for a week in order to completely release the gases in the beans. Generally speaking, the best drinking period of coffee is one week after frying, when the coffee is the freshest and the aroma and taste are the best.
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