I like the edging idea, tried that but I ust can not hold back

Does it taste like pre cum? I like that stuff.

It takes practice to learn how to lay off enough just before you are about to blow.
It does not taste like precum. The first couple squirts of semen are typically thinner and taste delightfully delicious, the last couple spurts are usually where the real sperm comes out. Its thicker and has a tendency to stick more to the back of your throat, letting the taste linger. It has a stronger taste, but not bad. I imagine everybody tastes a little different depending on their diet. If taste concerns you, drink a lot of pineapple juice all afternoon, and your evening cum will taste a little sweeter (or so I'm told.)
Something else you can try that I learned from a forum on pee drinking, rub your finger in your cum, then suck on your finger. After awhile you'll begin to get used to the taste and eventually acquire a taste for more. Trying to eat it all too early can be just too much.
Enjoy!