Mix together chopped kimchi, ground pork, tofu, Korean chives, soy sauce, minced garlic, sugar, gochugaru, sesame oil, salt, and black pepper until evenly combined
Spoon about 2-3 Tbsp filling into a round glass storage container
Dip a dumpling wrapper in water and place it over the filling
Add another spoonful of filling, then another wet wrapper
Repeat layering filling and wrappers until the container is full
Bring water to a boil in a steamer
Place containers inside and steam for about 15 minutes, until fully cooked
Garnish with chopped green onions or chives and sesame seeds
