You can actually change its taste with a product called something like "Cum D'Licious" -with the tag line 'Makes Your Semen Taste Better'
Thank you for all the really great advice, I now have lots to try.
I am thinking about the mental tease. Could any of you tell me about a experience of how you have done this .
My girlfriend has explained to me what she really likes is being teased and when I apply this it really works for her and she gets very turned on.
Lately I have been kissing her all over and moving slowly down to her vagina and kissing away again to build anticipation, often with out touching her there or maybe just breathing on her clit to tease her. She loves it but , Could any of you recommend other ways to tease her as I want there to be more variation and so it does not grow old.