What is the origin of Willow's snack Lan Mushroom Buns?

Warm Mushroom Buns: Warm Mushroom, scientifically known as Mushroom, is also known as Buddha's Ear Grass. It grows in the fields in early spring, is warm and sweet in nature, and has yellowish-white flowers in the summer, which are washed and dried in the sun after picking in the early spring, and is aromatic, and has the function of resolving phlegm and relieving coughs as well as strengthening the kidneys and muscles and bones. Taining folk every year in the traditional "spring society" this day, rural households do warm mushroom package, to honor the land god, praying for a good harvest. On this day, friends and relatives from near and far go back and forth to taste each other, and this custom has been passed down to this day. Depending on the ingredients, there are two types of buns: mochi and baozi. Baochi is made of rice and kneaded dried mushroom powder, and there are two ways of making it: one is to cook the rice in boiling water until it is six or seven years old, then fish out the dried rice broth and pound it into a mortar with the dried mushroom powder to make a ball, and the other is to soak the rice and grind it into a rice paste, and then cook it into a paste ball in a hot pot. There are also two ways to make the ingredients. One is dry frying, using freshly shredded bamboo shoots, preserved meat, dried tofu, shrimp, and scallion seeds, and cooking them with chili powder. When loading the bag, the patty dough picked up into a small piece, and then pinched into a cup of moderate thickness, and then loaded with fillings, the two sides together and pinched tightly, row into the steamer to be cooked can be eaten. Warm mushroom buns are made with 60% of the glutinous rice and 40% of the rice, seepage and grinding into the rice paste, put into a cloth bag pressure rod moisture and then with dry mushroom powder, kneaded and mixed evenly, and then the rice ball rolled into a small piece, made into a pot shape, filled with fillings, sealing and then loaded into the steamer steamed that is, warm mushroom buns.