Oil extraction process can be roughly divided into seven steps

First, stir dry. Will receive afterlife wet rapeseed stem speculation among the cauldron into the stove, fried dried standards are fragrant and can not focus, pay attention to control the size of the furnace hearth, which relates to the ability to squeeze the oil expeller and pure oil, consists of a master control. Second, grain mill. Is fried dry milled slot crushed rapeseed invested. Nianpan is powered by waterwheel driven waterwheel and Nianpan diameter generally in the 4 m or more, there are three Nianpan grinding wheel, all components are made by wood. Powered by a waterwheel as rapeseed crushed once it takes about 30 minutes. Consists of a master control. Third, rice flour. After rapeseed crushed into powder into the pot with a wooden steamer steamed, usually once a steamed cake, about 2 minutes, the standard is to see the steam steamed but not cooked by a master of manipulation. Fourth, to make cakes. The steamed powder filled with straw bottom circular hoop among embryos made cakes, a virgin 50 cakes, steamed flour from start to finish 50 spent about two hours cake. Consists of a master control. Fifth, into juice. The embryo cake into a whole by the virgin wood hewn trough, tank mounted on the right side of the wedge can be pressed to open it. Handmade oil extraction Square "host" is a stout and the "tank timber", length must be 5 m or more, no less than one meter in diameter section, carved into a tree center length 2 m, width 40 cm, "tank", oil embryo cake filling in the "tank", the open press, the palm hammer master, persistent suspended in the air for about 30 pounds heavier oil hammer, lay it hit the sump "into piles" on, then, snatched germ oil cake will outflow a Lou Lou golden edible vegetable oil, oil from the tank in the middle of a small mouth outflow. Consists of a master control. Sixth, a virgin. After two hours, the oil is almost virgin to do, you can squeeze out, and squeezed out of order, the first withdrawal "wood into" and then withdraw the stakes, the final withdrawal of cake. Seventh, into the cylinder. Pour vegetable oil will be squeezed into vats and sealed. These seven steps is a full traditional Oil processing process, with this wooden presses squeeze the sesame oil in sesame oil with mechanical compression are very different, it is golden color and Wei Xiang, low heat, low barrel without rapeseed precipitation matter, and set aside time than machine pressed vegetable oil to be long.