Prepare the dashi soy sauce according to separate instructions.

Remove the root ends of the enoki mushrooms and brush off any dirt.

Cut the enoki mushroom stems in half and break them into clumps.

Combine dashi soy sauce, sugar, and vinegar in a pot and cook over medium heat until it reaches a boil.

Add the enoki mushrooms to the boiling mixture.

Boil for approximately 7 minutes, or until the liquid has mostly evaporated.

Serve the nametake mushrooms over rice.

Optional: Serve with grated radish.