In a saucepan, combine water, brown sugar, and cinnamon sticks and heat over medium heat until sugar is dissolved.
Allowthe mixture to come to a boil, then reduce heat to low and simmer for 10minutes
While waiting place the pumpkin puree into a cheese cloth or fine sieve and squeeze out the pumpkin juice. You should be able to get a little over ½ cup of pumpkin juice.
Once the sugar mixture has reduced whisk in the pumpkin juice and pumpkin spices. Allow it to simmer for an additional 5 minutes, stirring frequently.
Remove the mixture from heat and let it cool to room temperature. Add in the condensed milk once the mixture has cooled.
Transfer the pumpkin spice syrup to a clean glass jar or bottle and store it in the refrigerator for up to two weeks.
Use the syrup to flavor coffee, lattes, tea, or any other beverage. Enjoy!
Notes
Condensed milk is optional. I used condensed milk to create a similar taste and texture to the Torani pumpkin sauce.