This traditional Chinese cake is so moist and indulgent. You can substitute adzuki beans with mung beans, lotus seeds, chestnuts, mixed nuts, dried fruits, etc. Once cool, these are ready to be served or wrapped as gift. They will be even more moist if you leave them at room temperature for 2 days. For a more authentic shape, press the cakes into a mooncake mold, small cake tins, cookie cutters, even muffins tins after they have been rolled in flour.