This section is from the book "Soyer's Standard Cookery", by Nicolas Soyer. Also available from Amazon: Soyer's Standard Cookery.
Prepare a Madeira Sauce as above, and add to the half-glaze, to be reduced, half its volume of very strong veal stock, and keep it a little thicker than usual. Finish this sauce by adding one-sixth of a pint of truffle essence and three ounces of chopped truffles per quart of Madeira Sauce. It may be served with small entrees, timbales, etc., etc.
 
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