Sauté the ginger, garlic and onion in the oil. Pour in the soy sauce and water, add the miso, bring to the boil. Add the vegetables, simmer the broth for approx. 10 mins.
Rice & noodles
Cook the rice according to the instructions on the packet. Cook the soba noodles in salted water until al dente. Serve the vegetable broth in soup bowls/dishes, add the noodles and rice. Sprinkle with the sesame seeds and add a drizzle of lemon juice.