Slice beef and mushrooms in thin strips.
Slice radish, onion, and carrot in 2 inches strips. Boil radish and carrot slightly in thin salt water.
Cut small green onions into 2 inches long.
Remove the head and root of green-bean sprouts. Boil only their stems slightly in water, then cut them into 2 inches long.
Remove the leaves of dropworts. Boil only their stems slightly in thin salted water. Drain well and cut them into 2 inches long.
Chop green onion and garlic. Put green onion, garlic, soy sauce, sesame oil, salt, and pepper in a bowl. Mix them well to make seasonings.
Spice the beef and the vegetables each with the seasonings.
Put the beef and the vegetables by colors in a pan. Add water and boil. When they are almost done, break and put an egg in the center of the pan. Boil them again until well done.