Finely chop Cheongyang chili peppers and onions.
Add water and doenjang (fermented soybean paste) to a pot and dissolve.
Add the prepared vegetables and tofu.
Add garlic and spicy Cheongyang chili peppers, then bring to a boil.
Pour in anchovy-kelp broth and continue boiling.
Taste and adjust the seasoning with salt if needed.
Transfer the finished spicy doenjang stew to a bowl.