Exercise:

1. Wash leeks, air them for a while, and dry the water on them.

2. Chop the dried leek, then sprinkle a little salt and rub it repeatedly by hand.

3. Put the kneaded leek in the jar and sprinkle salt while putting it. Be sure to sprinkle more salt and compact the leek.

4. Cover the jar and leave it for 3-4 days.