Cook noodles according to directions on pack. Strain, then set aside

Pour the stock into a medium saucepan and add the ginger, garlic, chilli, spring onions and the Kikkoman soy sauce. Bring to the boil. Reduce heat to a slow simmer

Add the carrots, broccoli, mushrooms and tofu, and simmer gently for 7-10 minutes or until vegetables are just tender. Do not overcook

Remove from heat and add the spinach leaves and the extra Kikkoman soy sauce

Divide the noodles between 4 serving dishes, spoon soup over and garnish with the chopped coriander