Does the top layer of Haagen-Dazs moon cake mean the chocolate layer on the outer layer of moon cake? If so, the chocolate layer is edible. Chocolate layer is usually made of high-quality chocolate, which can add taste and aroma to moon cakes. Therefore, you can taste or eat the chocolate layer in Haagen-Dazs moon cakes. Please note that this answer is only for Haagen-Dazs moon cakes. Other brands of moon cakes may have different production methods and materials. I suggest you check the product packaging or consult the official channels of relevant brands.