Whisk together the stock and VEGEMITE in a medium saucepan until combined, bring to the boil then reduce to a simmer.
Add the spring onions, carrot, bok choy and ginger then simmer for 2 minutes or until the bok choy is a bright green.
Add the beans and wakame and simmer a further 2 minutes or until wakame is softened.
Lastly add the tofu and simmer until heated through. Season to taste.
Ladle into 4 serving bowls and serve immediately.