Prepare beef and soybean paste (doenjang).
Pour water into a pot and bring to a boil.
Slice vegetables like potatoes, onions, and zucchini.
Add beef to the boiling water and cook until done.
Stir in the soybean paste.
Add the prepared vegetables.
Add tofu and continue to boil together.
Finally, add garlic and chili peppers, and simmer until done.