Keep it clean - and get rid of the hair. My wife uses wet wipes instead of dry toilet paper and I must say it makes a difference.
I've read pineapple juice helps the taste of men and women. I've tried it - but neither my wife or I have a problem with taste, so we can't comment on how well it works.
Sometimes for fun we'll use the Kama Sutra honey dust link
. It tastes great if you like sweet, but make sure to clean up well after - you don't want to risk a UTI or other issues.