儿茶的绿叶或果实收成后,即以人工捣烂或用机器捣烂,连渣带汁,约以2～3倍水渗合煎熬,一直煎到混合液呈胶状,即以竹筛捞起残渣,放入适量米糠(边糠),混和后倒进大木板块中(状像豆付板),趁热用铁片(或刀)画成小块,凝结后即成儿茶。可以晒干,也可以熏干。要注意加米糠份量,米糠太少,则很难凝成块,太多则质 After the green leaves or fruits of catechu are harvested, they are smashed by hand or smashed with a machine, even with slag, with about 2 to 3 times the amount of water infiltrating the torment, until the mixture is gelatinous, that is, bamboo sieved. From the residue, put in the appropriate amount of rice bran (side glutinous rice), mix it and pour it into a large wooden block (shaped like a bean to pay for the plate), and hot it with a piece of iron (or a knife) to draw a small piece, and condense and serve as catechu. It can be dried or smoked. Pay attention to the amount of glutinous rice, too little rice glutinous rice, it is difficult to congeal, too much quality