This Royal Icing not only adds delicious flavor, but serves as the glue that lets you stick small hearts onto our Valentine Sandwich Cookie Pops.
Combine sugar, egg white, and 1 tablespoon water in electric mixer until smooth. Add 1 to 3 more teaspoons water if too thick. Stir in coloring. Transfer icing to pastry bag fitted with 1/16-inch tip; reserve.