Take 4 cups of diced turnips and put them in a saucepan with 2 tablespoons of butter, and stir for ten minutes over a slow fire; then stir in 2 cups of water, 2 teaspoons of brown sugar, and plenty of pepper and salt, and let simmer for another ten minutes; add 2 cups of milk thickened with 1 tablespoon of flour, let boil up, stirring constantly, and serve with croutons.