Prepare radish, green onion, tofu, water parsley, and pollock roe.
Boil kelp broth (or anchovy stock) in a pot.
Add the radish and boil for 5 minutes.
Add pollock roe, tofu, and green onion, then simmer over medium heat for another 3 minutes.
Season with salt and pepper to taste.
Top with water parsley and turn off the heat.