2. Wash Xiancao and prepare rice soup. Fairy grass is colored when it is put into the water, and it is colored no matter how it is washed. If you want to wash it all, you will be too tired to cook the pulp. Rub it several times until there is no sand. This is very important, otherwise there will be sand in the jelly. Soak for half an hour after washing. When cooking porridge, put some thick rice soup out, and add it to the boiled soup to make it easier to freeze.
3. Knowledge expansion: The principle is very simple, because the starch-rich white powder is gelatinized by heating, and most gelatinized starch loses fluidity when it is cooled to form a gel. Once the gel is formed, it will gradually form a hard tissue. This phenomenon is called aging, but aging is reversible. Heating will break the hydrogen bond in the structure and make the amylose free again, so the solidified grass jelly will be restored. Based on this principle, there are already solid burning grass on the market, and it can be eaten as long as it is simply heated after purchase.