Put the stock into a stewpan with the herbs, onions, and mushrooms, and let it simmer very gently for about 1/2 hour; stir in sufficient thickening to make it of a proper consistency; let it boil for a few minutes, then skim off all the fat, strain and serve. This sauce, with the addition of a little cream, is now frequently called velouté.
Time: 1/2 hour.
Note: If poultry trimmings are at hand, the stock should be made of these; and the above sauce should not be made too thick, as it does not then admit of the fat being nicely removed.
The Book of Household Management (1861).