The picked hazelnuts with buds are piled and fermented for 1-2 days, afterwards, shelling with a stick, removing impurities, and then it will become commercial hazelnuts after finishing drying process. The harvested hazelnuts are stacked and fermented for 1-2 days. After stacking and fermenting, tap with a wooden stick to remove the buds. The fruit bud fragments and other impurities are removed out to meet the requirement of drying commercial hazelnuts.