Wash the fruit thoroughly with cold water. Cut the green leaves off if using strawberries. Pat dry COMPLETELY with paper towels.
Arrange several pieces of fruit on a bamboo skewer. Set aside. (Do not add too many pieces as it might be difficult to coat all of them if your saucepan is not deep enough.)
Add the sugar, corn syrup, and water to a medium saucepan. Place over medium heat.
Stir gently to help the sugar to melt.
Once the sugar has mostly melted, stop stirring and bring it to a boil.
Place a candy thermometer into the pot if available.
Continue boiling until the temperature reaches 320°F (hard crack stage), about 5 to 10 minutes. When you don’t have a thermometer, dip a teaspoon into cold water and then into the mixture. If it hardens immediately, then the temperature is correct.