This section is from the book "The Epicurean", by Charles Ranhofer. Also available from Amazon: The Epicurean, a Complete Treatise of Analytical and Practical Studies on the Culinary Art.
Butter the interior of a saucepan, cover the bottom with slices of onions, and lay on top some slices of unsmoked ham. add six pounds of split knuckle of veal, four pounds of beef and its bones, two pounds of parings of a roasted leg of mutton, with its bones broken, and four pounds of roasted chicken carcasses. Moisten with one quart of broth (No. 421), set it on the range, cover. and reduce on a moderate fire until the gravy becomes perfectly clear and falls to a glaze, remoisten with eight quarts of remoistening (No. 189), so that all the ingredients are covered, then boil, skim and season with salt, whole peppers, a bunch of parsley garnished with a bay leaf and as much thyme, a clove of garlic and four cloves, let the whole cook for four hours, then strain through a fine sieve, skim off the fat and reduce to half, and then clarify it with one pound each of veal and beef chopped up together. After the gravy is clear, strain it through a napkin and it is now ready for use.
A gravy may be made by remoistening espagnole sauce stock (No. 421), and adding to it some roast beef bones, chicken carcasses, etc.
Cut into square pieces, six pounds of a shoulder of veal, put them into a saucepan with half a pound of melted lard to fry on a moderate fire, turning over repeatedly with a spoon; a quarter of an hour later put in one pound of cut up carrots and four ounces of onions; continue to fry the meats from twelve to fifteen minutes longer. Now moisten them with the value of one pint of remoistening (No. 189), cover the saucepan and let the liquid reduce until it has fallen to a glaze without allowing it to burn; moisten the meats again with eight quarts of hot broth and half a bottleful of white wine; skim the liquid at the first boil, then remove it to the side of the range and throw in a ham bone, a partly roasted chicken weighing four pounds, also a few chicken giblets, add a few whole spices and a bunch of parsley garnished with aromatic herbs. When the meats are about three-quarters done, skim the fat from the gravy and thicken .with flour dissolved in cold water, two tablespoonfuls for each quart of liquid; continue to boil while skimming off more fat, and half an hour after, pour it through a sieve into another saucepan, let it come to a boil, then set it on one side of the fire to despumate for twenty-five minutes, stirring in at intervals a few spoonfuls of broth.
Skim, remove the fat once more, and strain the gravy into a vessel leaving it to get cold, while stirring it from time to time.
 
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