Opera caramels
Stir into two cupfuls of granulated sugar just enough milk to dissolve it, add a quarter teaspoonful of cream of tartar and put over a slow fire. Stir constantly while boiling until a little dropped into cold water has the consistency of putty. Pour into a shallow pan and set aside to cool until so stiff that your finger pressed on it leaves a dent. Now beat until you have a soft, dough-like mass. Knead this, put upon a pastry board sprinkled with powdered sugar, and roll into a sheet a half inch thick. Cut into squares. If you wish to make vanilla caramels of these stir in the vanilla just before taking the mixture from the fire.