Wash the cabbage thoroughly and cut it into bite-sized pieces.
Soak in salt for 30 minutes to remove excess moisture.
Combine soy sauce, vinegar, sugar, and water in a pot and bring to a boil.
Let the pickling sauce cool.
Squeeze the water out of the salted cabbage and place it in a container.
Pour the sauce over the cabbage and let it mature in the refrigerator for at least a day.