Italian sauce

Ingredients: Chablis, mushrooms, leeks, a bunch of herbs, peppercorns, Espagnole sauce, game gravy or stock, lemon.

Put into a stewpan two glasses of Chablis, two tablespoonsful of mushroom trimmings, a leek cut up, a bunch of herbs, five peppercorns, and boil till it is reduced to half. In another stewpan mix two glasses of Espagnole (No. 1) or Velute sauce (No 2) and half a glass of game gravy, boil for a few minutes then blend the contents of the two stewpans, pass through a sieve, and add the juice of a lemon.

See also: Wikipedia Cookbook.

Source: The Cook's Decameron: A Study In Taste, Containing Over Two Hundred Recipes For Italian Dishes from a project that puts out-of-copyright texts into the public domain. This is from a *very* old source, and reflects the cooking at the turn of the last century. Update as necessary.