Serves: 6
Preparation time: 5 minutes
Cooking time: about 30 minutes
Pick over the sorrel, remove the stalks and wash it in several changes of water. Put into a large saucepan to cover the bottom. Bring to the boil, add the sorrel and cook it gently for about 20 minutes, turning it over and pressing it down repeatedly with a spoon. Drain well and put through a blender. Return it to the pan with the butter, cream, salt and pepper. Stir over the heat for about 8 minutes, gradually adding enough flour to give a thick consistency.
