If the black skin of Wan Wen walnut comes from the juice of green skin, when it is not dried, it can be soaked in water for a period of time, then brushed with a brush, wrapped in toilet paper after brushing, and naturally dried. Don't try to dry or wash dishes in a hurry.

If it has dried, it is difficult to remove black at this time, and it is also difficult to remove it by soaking. At this time, it can be removed with hydrogen peroxide. Soak walnuts in hydrogen peroxide for a period of time, then wash them, wrap them in toilet paper and air dry naturally.

Oiling walnut plates Note:

The cortex of Xinwenwan walnut has high humidity and sufficient water. You must not oil at this time. Water and oil are incompatible. If Wan Wen walnut is oiled at this time, it will form a very uneven oil skin, which will be ugly and will not change back to its original state in the later period.

This is different from the embarrassing period of internal oil resistance of Wanwen Walnut itself. The embarrassing period of oil return is only a short time, but if it is artificial, it cannot be consistent.

Remember, don't grease new Wan Wen walnuts. If you must put oil on it, you must wait until the new walnuts are planted for at least 3 months. When Wan Wen walnut is completely dried, apply a little oil.