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.
Salpieons are prepared with cooked and cold meats and fish, red beef tongue, sweetbreads or beef palates; they are also made of chicken or game fillets, foies-gras, also with truffles, mushrooms, cepes, and besides these, oysters, lobsters, crawfish, etc.
The characteristic of salpicon is that it is cut into small squares; they may be prepared with one kind of substance alone, but are generally mixed, for example: chickens, with red beef tongue, truffles or mushrooms; game, with foies-gras or truffles, and fish, with mushrooms and truffles. Salpieons are always thickened with a sauce corresponding to the nature of the meat, and in all cases it must be succulent and condensed.
Take one pound of white meat of a cooked chicken, cut it into small dice and put the pieces in a saucepan with four spoonfuls of cooked lean ham, and as much mushrooms, all to be cut alike, and mingle in a few spoonfuls of good reduced bechamel sauce ( No. 409), finishing the preparation with a small piece of melted chicken glaze (No. 398). Pour the whole into a small pie dish (Fig. 183), smooth it to a dome and cover with a layer of duchess potato preparation (No. 2785), smooth again, butter over the top and bestrew with bread-crumbs and grated parmesan; bake for a quarter of an hour in a slack oven and serve in the same dish.
 
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