Raw walnut kernel, vinegar, soy sauce, salt, sugar and pepper.

1. Put the walnut kernel into a large bowl, add hot water for about 10 minute, take out the walnut kernel and peel off the skin. This step is troublesome, but it is the key to delicious food.

2. Take a bowl of moderate size, add walnuts and pour vinegar. The amount of vinegar is more than half that of walnut kernel. If you don't like the strong vinegar smell, you can add some water to lighten it. Put another spoonful of soy sauce, not too much soy sauce, otherwise it will spoil the taste, and add a little salt if the salty taste is not enough; Sprinkle half a spoonful of sugar, and finally sprinkle with Chili rings, soak for more than 15 minutes, and it's almost delicious.

3. When you eat, you can take out the dishes, or you can just soak them in a bowl and serve them.