The recipe, from watercress.co.uk, combines leeks with onions, watercress and a delicious miso-flavoured pesto for a multi-layered result. You can replace the dairy products with plant-based ...

If you are using miso paste, stir it in at this stage ... heat the olive oil or butter in a medium high heat and add the leeks and spring onions. Season lightly and cook until they soften but ...