Peel and finely chop the ginger. Put a large pan filled with 1.5 litres water on the hob. Add the ginger, miso paste and mirin, stir, then bring to the boil and allow to simmer for 10 minutes.
Meanwhile, heat the oil in a wok on a medium heat. Add the sliced garlic, fry for 15 seconds.
Tip in the sliced mushrooms and sliced courgette. Stir fry for another minute, then add the sliced pak choi, whole sugar snap peas and soy sauce. Stir fry for another 2-3 minutes.
Stir in the sliced spring onions and sesame seeds.
Chop the tofu into 1cm cubes and add to the soup along with the noodles. Bring back to the boil for 1 minute.
To serve, use tongs to lift a serving of noodles and tofu into each bowl. Top with a generous serving of the veg and then ladle over the soup. Enjoy!