Usually, the tremella is washed and put into the pot. After boiling, a lot of bubbles usually appear, which is a colloid belonging to tremella itself.

White bubbles are formed when some gelatinous and starchy things on the surface of tremella are decomposed into soup when cooked. If the tremella is not cleaned well, these white foams are not edible, and they are clean and completely edible. In fact, although in the practice of tremella, most people will choose to put rock sugar or white sugar, but it is also possible to put brown sugar in boiled tremella soup.

Brown sugar is especially good for women, which has the function of invigorating qi and enriching blood, and it is more nutritious than rock sugar, containing vitamins and trace elements.