因此月饼必须冷藏和只有一个月的保鲜期。
鸡蛋：康奈尔大学的食品科学家Joe Regenstein称，恰当冷藏的鸡蛋至少可以保存至保质期后3 - 5个星期。
Eggs: Properly refrigerated eggs should last at least 3-5 weeks after the sell-by date, according to Professor Joe Regenstein, a food scientist at Cornell University.
未黄油的保质期大约3个月内冷藏，因为它不含有防腐剂。
Unsalted butter has a shelf life of around 3 months refrigerated because it contains no preservatives.
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