No.
Indica rice is the first choice for making water tower cake, but it is not easy to buy, so this recipe uses ordinary cooking rice. It is a little stickier than indica rice but can be ignored, so it is very delicious (note: do not use too much rice). If you make sticky rice, you will feel sticky even when you eat. The rice cake will definitely be sticky.) If possible, use a steamer with a very fine mat to steam it, it will be more delicious.