1. Wash the newly bought water chestnut with clean water.
2. Then, put the water chestnut into the water and wash the sediment.
3. Use a fruit planer to remove some skins that are easy to remove, and the concave place in the middle can be reserved first.
4. When you think you have finished planing, go to the tip of the knife and gently gouge out the rest of the middle part.
Matters needing attention
You must be careful when using a knife, because the meat of water chestnut is very tender, and you can only be skilled if you use force.