Slightly brown the following vegetables in butter: - Twelve ounces of minced onions, one-ounce of parsley roots, four ounces of minced celery, a small sprig of thyme, a bit of bay, and a little mace. Sprinkle with two ounces of flour and a teaspoonful of curry pepper. Cook the flour for some minutes without letting it acquire any color, and dilute with one and one-half pints of white stock. Boil, cook gently for three-quarters of an hour, and rub through a sieve. Now heat the sauce, remove its grease, and keep it in the bain-marie. Serve with fish, shell-fish, poultry and various egg-preparations.