If the voluptuous-masochistic pleasure of coping with caramels is one of your vices, you—and your teeth—might as well contend with the genuine article.
In a heavy saucepan, combine the sugar, corn syrup, and water. Stir over moderate heat until the mixture boils and becomes clear. Wash down the sugar crystals on the sides of the pan with a wet brush.
Boil the syrup over high heat until its temperature reaches 250 degrees on a candy-jelly thermometer. Stir in the butter, a tablespoon at a time. Turn the heat do