The method of making plum preserves is as follows:

Main ingredients: 800g fresh plums, appropriate amount of salt, appropriate amount of rock sugar, and half a lemon.

1. Wash fresh plums and set aside.

2. Use a fruit knife to make cross marks on the surface of the plums, and pat them lightly to facilitate marinating.

3. Add appropriate amount of salt, mix well, and let it sit for two hours to release the water.

4. After two hours, rinse with cold water, boil rock sugar water and put it into a container containing plums. Squeeze the juice of half a lemon and mix well.

5. Prepare a clean glass jar, seal it with plums, and store it at room temperature or in the refrigerator for several days.