The Erotic Highway
Yes, I hear you, swimtrekr,
Semen may be an acquired taste, but so is pineapple juice! Eating parsley may help, but you'd need to consume lots of it. Drinking water, staying off dairy and meat products will aid as well. Whatever you do, stay away from Chinese food with MSG. That is a guaranteed sperm-taste-killer. Ugh!
Otherwise, there's Semenex, see link. Haven't tried them myself, but others seem to vouch for it.
It's all in the interest of science, eh?
the Love Goddess
I truly believe that you are, not only what you eat, but also what you drink.
Because oral is my specialty, I have guys telling me - betty, I have been drinking pineapple juice for two days!
That really doesn't change anything...because you need to "change" your diet to achieve a higher level of sweetness...it doesn't happen overnight.
Make gradual changes...increase the amount of fruits and their juices on your diet.
Stay away from strong tasting veggies...like broccoli and aspargus.
Reduce the amount of alcohol, it makes taste bitter.
Cigarrettes? Makes the cum horrible! Guys who smoke have awful texture & taste.
My boyfriend is a professional bodybuilder and, because of his diet - lots of protein, no fruits or juices, no sugar of any kind and high intake of health suplements & other stuff - his cum is real bitter!
So, your diet and habits are the major factors on your cum taste & texture.
If you change yours, you will see the difference.
When it comes to "cum", I always tell my guys they can tell if they are making improvements.
If the cum is clear & watery, it means bitter...if is white & creamy, is sweeter.
The thicker, whiter cum actually taste like vanilla pudding 
~~~~~~~ yummy! Simply delicious!
Thanks Goddess
If the wife does the shopping and fruits are not high priority, he can add the fruits on his lunch.
Every deli has precut fruit bowls, take one to work.