Cut the green onions into large pieces and slice the onion in half.
Cut the napa cabbage into bite-sized pieces.
Add the 5 chicken drumsticks to boiling water and blanch for 3 minutes. You can add 30ml of wine or soju to help remove any odor.
Drain the water and place the blanched chicken, green onions, onion, and whole garlic cloves in a pot.
Add 1L of water.
Season with 2tbsp tuna sauce, 1tsp salt, 1/2tsp MSG, and 2pinches Korean black pepper.
Bring to a boil over high heat. Once it starts boiling, cover with a lid and reduce to medium-low heat. After 15 minutes, add the cabbage and simmer for another 15 minutes.
Remove the onion and green onions from the pot.
Taste and adjust the seasoning by adding more salt or water to your preference.