I guess I have to put myself to the group of the fruity girls, even if I still have to run a poll among my ex-lovers for what fruit it is. I have opinions that say pineapple, others go for apple, and everything else.
I don't see the key in nutrition, I smoke occasionally, drink socially, have no specially defined eating habits, do sports regularly, but I practice a good hygiene down there, wash it daily with normal soap (more to the acidic side of the scale, pH 5.5), and rinse it good. I've perfumed a few times, but guys said the perfume tastes very acrid, even if it smells nice, so I stopped that habit, and rely on mother nature's gift ;-)