Rough chop or slice up the ginger.
Place elderberries, ginger, and cinnamon stick in the saucepan. Add water and bring to a boil over medium heat.
Once it is bubbling, turn heat down to the lowest setting, cover and simmer for 15 minutes.
Uncover the pot and continue to simmer until the liquid is almost reduced to half.
Let it cool and strain mixture. You should have about 1 cup (8 oz) of liquid. If you have more put the strained liquid back on the stove to reduce it more.
Combine the cooled, strained, elderberry liquid with the honey and mix very well. If you do this when the liquid is still warm (not hot) it will mix easier.
Store your syrup in a clean jar or bottle in the fridge. It should be good for a month or so.