Elderberry syrup is a potent flu and cold-fighting drink that also happens to taste great! You can make this elderberry syrup recipe from homegrown or foraged elderberries (fresh or frozen). A serving size can be as little as a single tablespoon or as much as a shot glass.
Once cooled enough to touch, pour elderberry mixture into cheesecloth/strainer that is sitting in pot/large bowl. Using your hands or a sturdy spoon, push as much juice out of the berry mixture as possible. You'll end up with a bunch of lightly damp fiber, seeds and pulp left in the cheesecloth. This is great for compost or perhaps your chickens will like it (our ducks show no interest). If you throw it into the trash, the Elderberry Witch will haunt you and ten of your friends for 11 years - no, not really.
Now you should have a nice pot of thick elderberry juice. Place the elderberry juice back on the stove over medium heat or until the fluid is at a low boil. At the same time, boil small canning jars in water for 15 minutes to sanitize them.
Continue at a low boil until the juice mixture has been reduced another 25% or so, then remove from heat.
Recommend using pressure canner (for safety) or freezing your elderberry syrup in freezer-safe jars. However, if using water bath canning method: remove jars from boiling water. Put funnel in each jar and fill each jar with elderberry syrup to just below the thread line. Use magnetized canning lid lifter to dip each lid into boiling water for about 10 seconds to sanitize it and soften the rim sealer. Screw lids on to each jar so that they're in place but not tight - you want a little give.
Remove jars and put on stove or counter top. Jars should make a "pop" sound and the lids will indent slightly. This indicates that they have properly sealed and are safe for storage. If they do NOT seal properly, you'll want to reseal them by boiling for another 5 minutes OR plan to store them in a fridge or freezer. You can get very sick or die by eating improperly canned/sealed food items.
Elderberry syrup made from fresh or frozen berries https://www.tyrantfarms.com/how-to-make-elderberry-syrup-and-stop-a-flu/