Xiaotiao Pear Soup —— An old Beijing health-preserving dessert with the functions of beautifying, relaxing bowels, moistening lung and clearing fire. Pears are delicious when eaten raw and have a special flavor when cooked. It can not only clear away heat and reduce fire, but also promote fluid production to quench thirst, clear lung and relieve cough, which can best resolve autumn dryness. Eating pears in autumn and winter is the most suitable occasion. Tremella is known as the "crown of bacteria", which has the effects of moistening the intestines, relaxing bowels, moistening the lungs and resolving phlegm. Small pear soup is a traditional drink in autumn and winter in old Beijing. It is made of Sydney and tremella, and sweet plums are added. The soup is light yellow, refreshing and slightly thick, and Sydney granules are full. Thick colloidal tremella increased the viscosity of the soup, but it was not cooked completely in the pot. On the contrary, it has a little pleasant taste of q-bomb.