Combine elderberries, cinnamon, ginger, and water in a non-reactive saucepan.
Bring to a boil, then reduce to a simmer, Cover and simmer 30 to 40 minutes, until liquid has reduced by half. Remove from heat and cool slightly.
Using a potato masher or back of a ladle, smash the berries carefully to release all the beneficial juices.
Strain, using a cheesecloth so you can squeeze out all the liquid.
When liquid is lukewarm, add the honey or maple syrup.
Pour into a glass mason jar. Label and store in a cool place or in the fridge.
Standard dose is 1 tablespoon per day for adults for prevention. For early upper respiratory or flu symptoms, take every 1 to 2 hours throughout the first day, then as needed.
Note: Using 1 part honey to 1 part liquid will preserve the syrup for several months, up to one
year. If you choose to use less honey, keep the syrup in the fridge and use it within a few