Prepare the Plums: Rinse the dried plums under cold water to remove any dirt or preservatives. Pat them dry with a clean towel.
Make the Marinade: In a mixing bowl, combine salt, sugar, and any optional spices (like star anise or licorice root). Add a small amount of water (about 1/4 cup) and stir until the sugar and salt dissolve completely. If you're using a saucepan, you can heat the water slightly to help dissolve the sugar and salt, but avoid boiling.
Marinate the Plums: Place the dried plums in an airtight jar or container and pour the marinade over them, ensuring that the plums are evenly coated. Seal the container tightly.
Refrigerate and Shake: Let the plums marinate in the fridge for 24-48 hours. Shake the jar every few hours to ensure that the plums are well-coated with the marinade.
Serve and Enjoy: After the plums have marinated, they’re ready to eat. Serve them as a snack, pair with tea, or use them in other recipes like salads or rice dishes.