Add the brown sugar, cane sugar, molasses, ground ginger, cinnamon, nutmeg, salt, and water to a small pan. Whisk to combine.
Bring to a soft boil and then immediately reduce to a simmer over medium-low and continue to simmer the syrup while whisking occasionally for 7-8 minutes or until it coats the back of spoon.
Remove from the heat and strain the syrup using a fine mesh sieve if desired. The syrup will continue to thicken while it cools.
Allow to cool and then store in an airtight container in the refrigerator for 1-2 weeks. Enjoy!
