Cut the napa cabbage into bite-sized pieces and wash thoroughly. Place it in a microwave-safe container and cook for 3–4 minutes.

Let the cooked cabbage cool slightly and squeeze out excess water.

Prepare the seasoning by mixing 1 tbsp doenjang, 1/2 tbsp soy sauce, 1 tbsp sesame oil, and finely chopped white part of green onion. Microwave the mixture for 30 seconds.