Before starting this Courgette Velouté recipe, make sure you have organised all the necessary ingredients. Wash the courgettes, then dice them. Place the courgette dices in a cast-iron casserole. Add the water... ... the milk... ... and the cube of chicken stock. Cook for about 15 minutes. Peel the garlic and onion, then slice finely. In a separate cast iron casserole, heat the olive oil. ...