What additives can be added when soaking rice in water-milled rice cakes to make the rice cakes chewy and good in appearance? Please help!

You can just use Self's rice cake improver. Generally, rice cakes made from glutinous rice are often milky white and dull in color, lack appearance, have poor gluten, and are easy to regenerate. In addition, rice cakes have high moisture content and are prone to spoilage. The rice cake improver produced by their factory is a compound pure biological agent, which is safe and qualified and can improve the above-mentioned problems you want to solve.