Preparation materials: mustard: 10 kg, salt: 500 g, wine: appropriate amount.

1, Step 1: Wash mustard.

Step 2: Boil a pot of boiling water.

Step 3: Boil the boiling water and put it into wine, salt and jar. Add the washed mustard while it is hot, and take it out after 5 seconds. Don't let the boiling water get hot.

Step 4: Wait until the water in the water tank is completely cooled before adding mustard.

5. Step 5: Seal for 20 days.