From the book The Clitoral Kiss: A Fun Guide to Oral Sex works wonders on making semen taste better.  
The recipe:  
2 teaspoons honey,  
1 cup milk,  
1/4 teaspoon ground cinnamon,  
1/4 teaspoon ground ginger,  
1/4 teaspoon ground nutmeg,  
1/4 teaspoon ground cloves  
and 1 raw egg. Whipped til smooth.