Step 1

Combine all the ingredients and mix well until everything is well incorporated.

Step 2

If using optional ingredients, prepare the ingredients, combine and mix everything well.

Step 3

Preheat a small pan with a tablespoon of oil. Add the onion, scallion and garlic and stir fry until the onion is cooked.

Step 4

Add the tuna, doenjang, gochujang and the remaining ingredients. Stir well for a few minutes until everything is well incorporated. You can stir in some water or rice wine (or mirin) if the sauce seems dry (2 to 3 tablespoons).