Basically what you are doing is making something like Sambucol without any of the extra ingredients. Elderberry is an anti-viral and a lot of folks use it for colds and flu. Putting it in Vodka preserves it so you can store it for a long time on the shelf. The alcohol is very good at extracting all the goodies from the berries. Elderberry extract like you are making really will work on the flu. I've been using and making it for 2 yrs now. I just made 2 quarts last week. Another lady who has been doing tinctures a lot longer than me told me you can heat it a little bit but don't boil it or you might alter the ingredient that helps you. You can sugar it and when you need a dose you can put it in tea or warm water. One tsp. 3x a day. I hope this helps. (I'm sorry, I meant for this to be on the Elderberry thread) Maybe the Mods can move it for me?? Sorry!!