In a saucepan over medium-high heat, combine sugar and water. Bring to a boil, stirring to dissolve sugar. Add Cherries, stirring constantly, and return to a boil. Reduce heat and boil gently for 5 minutes.
Using a slotted spoon pack fruit in hot jars withing 1/2 in headspace add rum or spirit. Ladle hot syrup into jar to cover fruit. Wipe rum and place lids and bands on jars.