I try to have vanillin around all the time. It seems to go with so many different flavors. Sort of got into the habit of adding it to almost everything .... lol. To me it adds a little "pah" to many juices.I used a 9% solution mixed in pg, and added about 2 drops per 15ml. I'm not a huge fan of sweeteners either, the only additive i'm eager to try at this point is ethyl vanillin.