Crystals in cold weather are natural foods extracted from the cell walls of red algae in the deep sea. They are round in appearance and chewy in taste, so they are very good food. It is named because cold weather must be made in a cold and dry climate in winter. In cold weather, it is easy to get full when you meet water, and its water absorption is as high as 2~25 times, which is 2 times stronger than that of ordinary foreign vegetables. In cold weather, low calorie and low calorie have no upper limit of intake, and high fiber can increase the amount of defecation and only coat oil and starch. In addition to being eaten directly in drinks, cold flour can also be made into jelly with fresh fruits, which can be combined with existing dishes, made into all-purpose sauce, and can replace the white powder of glutinous rice, which has the effect of locking delicious capsules, solidifying soup, replacing noodles to increase satiety and can be eaten directly.