Sweet and sour sesame jelly is a traditional summer snack in Tongren. Different from Guiyang ice powder, Tongren ice powder is rich in ingredients, but its taste is very simple. The main raw materials are: bean jelly seeds (also known as ice powder seeds), alkaline water, lime water, white (red) sugar, balsamic vinegar, sesame seeds and so on.

The bean jelly seeds are put into a cloth bag, kneaded with a certain proportion of alkaline water, lime water and cold water to form slurry, and made by chemical reaction. It is milky white and crystal clear. It has the characteristics of smooth brushing, sweet and sour fragrance, thorough cooling, invigorating spleen, relieving fever and quenching thirst, and is deeply loved by Xian Yi, young and old.