Preparation materials: half a catty of tender ginger, half a bag of vinegar and two ounces of sugar.

1. Scrape the ginger skin clean and cut it into thin slices.

2. Boil it in boiling water for about three minutes, take it out and soak it in cold water for 2 or 3 hours, then drain it.

3. Mix sugar and vinegar, cook until the sugar is completely dissolved, and then cool thoroughly.

4. Put the ginger in a glass container, pour the sweet vinegar juice to soak the ginger, and eat it three days later.