Ingredients
Method
1.Put potato and stock in a saucepan and season with the salt. Bring to a gentle bubble, then lower the heat, partially cover pan with a lid and cook gently for 10-12 minutes, until potato is tender. Add spinach and cook for 3 minutes, then add rocket, mint and parsley. Cool soup for 5 minutes.
2.Purée soup with a stick blender or in batches in a food processor. Return soup to a clean pan and reheat gently. Taste for seasoning, adding a little more salt and a squeeze or two of lemon juice.
3.Ladle into mugs and top with blobs of yoghurt. Sprinkle with snipped chives and grind over a little pepper. Serve immediately.
