60 days According to the packaging instructions of Starbucks moon cakes, the shelf life of Starbucks moon cakes is generally 60 days. As a well-known brand, Starbucks strictly controls the amount of preservatives used in its moon cakes, which helps to extend the shelf life of moon cakes. In addition, Starbucks moon cakes usually use high-quality packaging materials, which have good sealing and barrier properties, and can effectively prevent the influence of external factors such as oxygen and moisture on moon cakes, thus extending the shelf life.