The materials to be prepared in advance include: 5 mustard plants, boiled water 1000ml.

1. Wash mustard and put it on the balcony to dry.

Scald this dish with boiling water.

When the color becomes greener, take it out and put it in the bottle.

4. The bottle should be cleaned and dried in advance, and the bottle must not be stained with oil.

5. After the bottle is installed, pour the water just used for scalding vegetables into the bottle, and then find something hard and a little heavy to press on the vegetables to ensure that the vegetables are completely soaked in the water.

It can be taken out in 6 or 5 days, and it is finished.