Sauce au Beurre d'Anchois. Boil together a pint of good brown sauce, a bunch of herbs, and a gill of strong brown stock, and let it reduce till the sauce clings to, and slightly coats, the spoon with which you stir it; then skim well, sieve if necessary, and leave it in the bain-marie till wanted. When to be served stir into it at the last moment an ounce or more of anchovy butter, and serve at once.