This section is from the book "Simple Italian Cookery", by Antonia Isola. Also available from Amazon: Simple Italian Cookery.
Put two ounces of butter and two tablespoons of flour into a saucepan and stir for five minutes. Pour one and one-half pints of boiling milk gradually in, beating well with a whisk. Add some nutmeg, a few peppercorns, a pinch of salt, and some chopped mushrooms. Cook for one-quarter of an hour, and rub through a fine sieve.
Mix three tablespoons of butter and three of flour to a smooth paste, put some peppercorns, one-half an onion, one-half a carrot sliced, a small piece of mace, two teacups of white stock, a pinch of salt and of grated nutmeg, in a stew-pan; simmer for one-half an hour, stirring often, then add one teacup of cream; boil at once, and strain and serve.