Suifenhe acorn

Acorn, the fruit of oak, looks like a cocoon, so it is also called chestnut cocoon. "Biography of Du Fu in the New Tang Dynasty": "As a guest in Qin Zhou, I have to pick oak chestnuts to support myself." There is a poem in Zhang Ji of Tang Dynasty: "At the end of the year, hoe the plow and lean against the empty room, and shout for the acorns to climb the mountain." Acorn has a hard shell, reddish brown, and a peanut kernel, which is rich in starch, with a content of about 60%. It is not only edible, but also can be used as raw material for sizing in textile industry. The bean curd made of rubber kernels is delicious and sweet. Every 100 kilograms of rubber kernels can brew about 40 kilograms of 55-degree white wine. Acorn is said to be older than rice and wheat. The history of people eating acorns can be traced back to at least 600 years BC. In the past long years, acorns have been the main food for many mountain people. In the Tang Dynasty, Pi Rixiu wrote an "Oak Sigh", which reads: "In autumn, the acorns are ripe, and the hazel hills are scattered, and the yellow hair is awkward, and the morning frost is picked up. When it was moved, it began to be full, and the Japanese side filled the basket and steamed it several times, which was used as grain for three winters ... "As can be seen from the poem, acorns were still a kind of food for the people at the end of the Tang Dynasty.
Reprinted with attribution： https://cnlocality.com/(Chinese Specialty Products)