Transfer the finely chopped cabbage to a large mixing bowl, add the salt, and massage it into the cabbage. Let it rest for 10 minutes to draw out excess moisture. Rinse under cold water, drain, and transfer to a clean kitchen towel. Squeeze out as much excess water as possible.

Add the cabbage and remaining filling ingredients to a large mixing bowl. Mix in one direction with chopsticks or a fork until the filling becomes sticky and well combined. Cook 1 tablespoon of filling in the pan or in the microwave for 60 seconds, or until fully cooked. Taste and adjust the seasoning if needed before wrapping the dumplings.

Place a small bowl of cold water nearby. Place a dumpling wrapper on a clean work surface or in the palm of your hand. Add 1 ½ teaspoons of filling to the center, then lightly dab water around the edges with your finger.