Castanea mollissima in North China is mainly distributed in Yanshan and Taihang Mountains in North China and their adjacent areas. Including Hebei, Beijing, northern Henan, Shandong, Shaanxi, parts of Gansu and northern Jiangsu. It is characterized by small fruit shape, with an average single grain weight of about10g, 500g per catty, and about 50 pieces per catty.
Southern chestnut is mainly distributed in Jiangsu, Zhejiang, Anhui, Hubei, Hunan and southern Henan. It is hot and rainy in this area, and chestnuts and nuts are large in shape. The average weight of a single nut is about 15g, and the maximum weight is 25g. A kilo of 500g is about 20 to 35g.
Extended data:
Chestnut in the north is waxy in meat, with a sugar content as high as 20%; The pulp has low starch content and high protein content; The peel is dark and shiny; Strong fragrance, astringent skin and easy peeling, suitable for frying, called sugar fried chestnuts.
Chestnut in south China has low sugar content, high starch content and japonica meat, which is mostly used as vegetable chestnut. There are many varieties of chestnut in the north and south of China, and there are differences in characters and characteristics between the southern and northern varieties. Generally, the quality of southern varieties is not as good as that of northern varieties, and the meat quality is japonica, which is suitable for cooking, also known as Chinese cabbage chestnut.
References:
Baidu encyclopedia-chestnuts