Neatly pare off the claws of half a pound of very fine, fat, fresh frogs' legs. Cut them into pieces at each joint. Place them in a saucepan on the hot range, with half an ounce of very good butter. Season with one pinch of salt and half a saltspoonful of red pepper. Cook on a brisk fire for five minutes, then add a wine-glassful of Madeira wine, with two finely minced truffles; reduce for three minutes. Crack into a bowl three egg yolks, add to it half a pint of sweet cream, beat well together one minute, pour it into the pan with the frogs, then gently shuffle the pan in opposite directions until the sauce thickens, which will take two minutes and a half. Pour into a hot soup-tureen, and serve.