Cut the beef brisket and vegetables into bite-sized pieces.
Add the beef brisket to a pot and stir-fry over medium heat to render the fat.
Add onion, zucchini, potato, mushrooms, and other vegetables, and stir-fry together.
Pour in anchovy broth or water and bring to a boil.
Dissolve doenjang (soybean paste) and minced garlic into the stew.
Add tofu and Cheongyang chili pepper, and simmer a bit longer.
Taste and adjust seasoning with salt or soup soy sauce if needed.