Savory, steamed taro cake, richly flavored with mushrooms and pork. Taro is a flavorful, starchy tuber similar to a sweet potato. It has a sweet/nutty/potato flavor. The larger taro roots are sweeter but drier than the smaller roots. It's avilable in most supermarkets, but if you can't find it, use sweet potato or yam. This cake is a very popular New Year's treat. During the first ten days of the New Year's celebration a few slices of all the different New Year's cakes are fried every morning for breakfast or when friends or family stop by. The cake will keep nicely in the refrigerator for 10 days if wrapped in plastic wrap.