sentence: cut the tofu into squares sentence: chop up the green onion sentence: boil the tofu sentence: add water sugar soy sauce sake and mirin to a pan sentence: add the tofu and cook until the liquid is gone sentence: heat dashi soy sauce mirin and sake in a pan sentence: add the udon noodles and let simmer sentence: put the noodles soup and tofu in bowl and top with green onion