First, prepare 200 grams of fresh ginger, 300 grams of white vinegar, a little salt and a proper amount of rock sugar, find a sealed glass bottle, wash the prepared ginger, remove water and cut it into thin slices for later use.

Secondly, sterilize the prepared glass bottle with hot water at high temperature, dry the water, put the prepared ginger slices in the bottle, add rock sugar and a little salt, then pour in white vinegar, seal the glass bottle and put it in the refrigerator. Refrigerate for one week, take out and use directly.