Cut the tofu sheets into bite-sized pieces.
Slice the radish, green onion, and brisket.
Boil water in a pot and add the brisket to make broth.
Add radish and green onion to the broth and bring to a boil.
Add the tofu sheets and simmer for 2-3 more minutes.
Season with salt and pepper to taste.
Serve in a bowl.