Been at it for years, and the only way I've found to lessen the kava "blow" is by regulating your breathing during drinking. Whatever you do, don't breathe through your nose. Drink your kava as quickly as possible, and then start the rinsing process of your mouth with whatever you find neutral. Water works for me. If you successfully manage to not breathe through your nose, you'll barely taste a thing. If all else fails, keep a pack of your favorite gum (preferably STRONG mint) handy, and eat a piece as soon as you've rinsed your mouth out.