30 to 60 days. According to the information of the food investment promotion network. Haagen-Dazs moon cakes are actually made of Haagen-Dazs ice cream in the shape and size of traditional China moon cakes. The shelf life of Haagen-Dazs moon cakes is longer than that of ordinary moon cakes, because they are generally kept at a low temperature of around zero. Storage conditions also affect the shelf life of Haagen-Dazs ice cream moon cakes, which need to be stored in the freezer with the temperature below-18 degrees.