Makes 80 squares
Boil sugar, syrup, water and vinegar to the hard-crack stage, 300°, without stirring. Remove from the fire and quickly stir in the oil of anise and the red coloring.
Pour at once into a greased shallow pan about 10"×8". When the surface of the mixture is firm enough to hold the impression of a lightly drawn line, mark into 1" squares, or smaller, with a silver knife. When colk, break along lines.