I could see this soup being good with the addition of some soba-type noodles.
Sake-Marinated Tofu in Shitake Broth
Recipe from Gourmet Traveller.
250g medium-firm tofu
8 shitake mushrooms, sliced
1 small carrot, julienned
50g baby spinach
sake marinade:
2 tbsp soy sauce
1 tbsp sugar
1 tbsp mirin
1 tbsp sake
1/4 tsp fresh ginger, grated
1/2 garlic clove, minced
broth:
500ml dashi, vegetable stock or water
1/2 tsp toasted sesame oil
1 tbsp soy sauce
2 tsp rice vinegar
2 tsp mirin
1/2 garlic clove, minced
1/2 tsp grated ginger
1/2 tsp sugar
1/2 tsp salt
shichimi togarashi (japanese 7 spice powder), to serve (I didn't have this, I used a little hot sauce instead)
Pat the tofu with a kitchen towel to remove excess moisture, then cut into 1-cm thick slices. Combine the marinade ingredients in a small bowl and marinade the tofu pieces for at least 2 hours (or overnight).
Lift the tofu pieces from the marinade and place on a heatproof dish. Steam on a medium heat for 6-8 minutes, until heated through. Remove from heat and keep warm.
Place all the broth ingredients in a saucepan and bring to a boil. Add the shitake and carrots then lower the heat to a simmer and cook for 4 minutes. Add spinach and cook for a further minute, until the leaves have wilted. Taste and season.
Arrange the warm tofu in large flat bowls, then pour over the broth. Serve with a dash of togarashi for a little heat.