I experienced many failures and tried many methods, and finally found a method. We can discuss it with everyone. There are three ways to summarize online.
1. Directly mix rice flour and water in a ratio of 1:1, add dry yeast powder and baking powder, stir and ferment, rise and steam in a pot. Although the hair cake made by this method is shaped, it tastes dry and rough.
2. Mix the rice flour and water according to 1:2, then heat it over water and stir it into half-cooked rice paste. After cooling, add dry yeast powder and baking powder to ferment. After it rises, steam it in a pot. . This method almost 100% fails. It rises very well, but as soon as it is steamed, it turns into a bowl of paste. It may be due to the lack of experience of beginners, or the different water absorption properties of rice. Northern rice has poor water absorption, making it difficult to succeed.
3. This method is the most successful. The steamed cake has a shaped texture and a delicate texture. Mix rice flour and water at a ratio of 1:1.2 and no more than 1:1.5 (depending on the water absorption of rice). The ratio can also be smaller. Then divide it into three parts, put dry yeast and baking powder in one part for fermentation, and heat the mature rice milk in one part (it can be stirred and heated over water, or heated in the microwave. The time must be mastered when heating in the microwave, otherwise it will be too dry and difficult to stir. ), leaving a portion of uncooked rice milk. Stir the raw and cooked rice milk together to make half-cooked rice milk. When the fermented part emits small bubbles (about half an hour), you can stir the three parts together and ferment again. The time depends on the temperature. I am here in winter. Leave it for 4 hours with heating, until many small bubbles appear on the surface of the rice paste (if you use a transparent container, you can see many small bubbles on the wall of the bowl). Then you can steam it in a pot and steam for 10 seconds. -20 minutes (less rice milk and smaller container can take longer to steam). Turn off the heat, let it sit for 5 minutes and then lift the lid. The rice cake will appear in front of you. It might be more elastic if you add some glutinous rice flour, but I haven't tried it yet.
I wish you success!