Wash the mugwort thoroughly and prepare it.
Cut the beef into bite-sized pieces.
Slice the onion, potato, and zucchini; cut the tofu into squares.
In a pot, stir-fry the beef with minced garlic.
Add water and doenjang (fermented soybean paste), then bring to a boil.
When boiling, add the potato, onion, and zucchini and cook until tender.
Add the tofu and mugwort and let it simmer briefly.
Season with salt and pepper to taste.