Have a double boiler set up, in the top part of the double boiler, off heat combine egg yolks, cream, hot sauce and reduced wine/vinegar mixture, whisk well. Place over the simmering water whisking at all times until the eggs begin to thicken, 2 to 4 minutes add butter very slowly while whisking until thickened. If it gets to thick add drops of hot water to thin. Serve immediatly or keep warm by putting dish in a small pan of warm water. Do not reheat, it will seperate.