container in the ice-water bath and chill, stirring continuously, until the sauce
begins to thicken, which happens when its temperature lowers to about 68ºF . If the sauce
thickens too much, it will start to get lumpy. If this occurs, place
container in the hot-water bath and continue to stir until the sauce
is smooth again. It will only be a few degrees warmer but much thinner. Move the sauce
container back to the ice-water bath and chill again only until it starts to thicken.