5. The last influential factor that gives a deceiving color to barberry is the excessive use of water and oil in the cleaning process (and even after it). Somewhat moistening dried barberry is necessary to protect it against breaking up in the drying drum, but excessive use of water to increase fruit weight and of oil to give it a deceiving appearance, which is practiced in rare cases in barberry cleaning workshops, increases fruit weight and gives it a false appearance to decive the customers.