I have had one SO who told me that anything healthy and natural increased enzeyme production in digestion which in turn made the taste sour. I actually only ate salads when she wasn't around because she was so sure of herself and let's face it - she was pretty much holding all the cards.
The next girl I dated we talked about it and she asked me if I could describe the taste of oysters. The point is to enjoy the texture and the way they slide down your throat when you eat them. She said, "if you are focusing on the taste you are missing the point." I really liked her.
Some women like milk chocolate and some like dark chocolate. As long as I am asking the right questions, I'll do my best to bring home the right candy! (that in no way discounts the awkwardness of asking a girl how she likes her cum to taste the first time...)