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.
Raise twelve fillets from the soles; pare them their whole length and flatten; season and lay them on a buttered raised-edged baking tin with the parings and bones, half a bottle of white wine, sprigs of parsley, bay leaf, salt, and whole peppers; make a court bouillon by boiling twenty minutes; strain it, and cover the fillets, and poach them partially only; a few moments will suffice for this. Drain and range them on another clean baking sheet, covering over with a buttered paper, and let get cold under a weight, then pare them once more; strain the above stock, skim off the fat. and reduce it to a half-glaze, incorporating it slowly into a little espagnole sauce ( No. 414) with the oyster and mushroom broth. When the sauce is of a sufficient succulence strain and keep it in a bain-marie. Make a pike forcemeat (No. 76). Butter some oval rings three and one-half inches by one and three-quarter inches, and a quarter of an inch thick, lay these on sheets of buttered paper, till them with pike forcemeat; smooth nicely, and range on top the pared fillets: set the rings on a baking sheet one beside another, cover with buttered paper cut in the desirable size.
This operation may be performed a few hours before dinner time, that is if the baking sheets can be kept on ice to prevent the forcemeat from souring. Fifteen minutes before serving set the sheets in a slow oven to heat the fillets, and poach the forcemeat. After taking them out lift off the paper, then with a fish skimmer remove each bed of forcemeat and fillets without disarranging them whatever, remove the rings and the paper, dress at once on a dish and surround with very hot garnishing of twelve quenelles godiveau of pike (No. 83), and two dozen channeled mushrooms (No. 118) on the Other; as soon as the dishes are garnished set them into the heater. At the very last moment heat the sauce while stirring, adding butter in moderation; remove the dish from the heater, drain off the liquid and lightly cover the fish garnisshings with the sauce. Send a sauce-boat of the sauce into which has been added two dozen oysters, from which the hard parts have been removed, trimmed and cut in large dice.
Remove the black skin from a fine sole; insert the knife on each side to separate the fillets without detaching them; lay the fish on a buttered dish, the black skin side underneath; moisten with white wine and oyster broth, season and set on top some small pieces of butter; place it in the oven to cook without coloring. Drain off the stock, add a minced onion, and reduce it to half, pouring in a little espagnole sauce (No. 414), and thickening with butter and lemon juice; strain this through a tammy; garnish around the sole with mushroom heads and the soft part of oysters; add chopped parsley, pour part of the sauce over the whole, serve the rest separately.
 
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