I've been blending my kava with roughly a tablespoon of vegetable oil, lately, and the results are...inconclusive. I can't really tell that it's necessarily stronger, and indeed tonight's grog struck me as being less potent than expected (bad stress day, so again bro was OK with it).
Blending and using hot water both have most certainly upped the strength of my drinks, though. The latter makes the grog taste quite awful, though, even to a caveman such as I.
Is lecithin more effective than vegetable oil? I figured they would work similarly, if at all. The latter is much easier to find...I've yet to find lecithin anywhere within the local stores.