Combine sugar, corn syrup, and water in a medium saucepan over medium-high heat. Heat to 300 to 310 degrees F (149 to 154 degrees C), or until a small amount of syrup dropped into cold water forms hard, brittle threads. Remove from heat and stir in food coloring.
Step 3
Holding each apple by its stick, dip in syrup, remove and turn to coat evenly. Place on prepared sheets to harden.