cleaned and beards removed (throw away any that won’t close)
steamed rice to serve
Heat the vegetable stock in a large saucepan, and add the ginger, miso paste and half the spring onions. Bring to a simmer, then add the mussels. Put on the lid, and cook for 4-5 minutes until the mussels are open. Scatter with the remaining spring onion and serve with rice if you like.