Put all ingredients in a saucepan and simmer.Stir to make sure sugar dissolves completely.
Take off heat and steep for 20 minutes.
Remove cinnamon sticks and pour syrup into an airtight container.The syrup will keep for 2 weeks in the refrigerator.
NOTES
Recipe makes 1 cup (16 tablespoons) of syrup. Use 1-2 tablespoons of syrup for each cup to sweeten and flavor.
There's no need to let the ingredients come to a boil. Simmering on low heat to let the sugar dissolve, then steeping is enough to make the simple syrup.
The longer the cinnamon sticks steep in the saucepan with the sugar and water, the stronger the cinnamon taste will be.