Walnuts are bitter because the outer skin of walnuts contains tannins, so they have a slightly bitter taste.

How to remove the bitter taste of walnuts:

1. After the walnuts are shelled, there is a layer of coating (skin) on the surface of the meat. This coating has a bitter taste and can be removed. The easiest way to remove the clothes is to soak the walnut meat in water and then pick it with a bamboo skewer, so that the clothes can be easily peeled off. If you put some salt in the boiling water, the effect will be better;

2. It is normal for the walnut skin to have a bitter taste and does not need to be removed. The skin is nutritious;

3. Roast it Rubbing the skin can remove the bitter taste.