Wash the altari radish thoroughly and cut it into appropriate sizes.
Cut zucchini, tofu, and onion into bite-sized pieces.
Pour water into a pot and make broth using anchovies and kelp.
Once the broth is ready, remove the anchovies and kelp.
Dissolve the soybean paste into the broth and stir well.
Add the altari radish, zucchini, and onion and bring to a boil.
Add tofu, green onion, and minced garlic, then boil once more.
Season with salt and pepper to taste.