Mine is the nectar of the heavens. But generally, it really depends on the individual's dietary intake, various health factors, smoking/tobacco status, and how recently they had previously ejaculated before the one being tasted.
In general, semen tastes a bit sweet and salty, with a hint of chlorine to it. If it's been a long time since the person's previous ejaculation so that load has been just sitting and waiting in their body, it can be more watery with an alkaline burn in the back of the throat. If the individual has recently ejaculated a time or two so it's been no more than 12 to 24 hours since the previous ejaculation, that load is fresher so it will be thicker, whiter, and creamier with an almost buttery taste and no throat burn.
Foods can widely effect the taste, too. From what I understand, asparagus will negatively affect the taste of semen just like it affects the smell of urine. Cranberries, celery, and other various fruits are known to improve the taste of semen and make it sweeter. Smoking and other tobacco use is known to also negatively affect the taste.
In any case, the taste and texture of semen is an acquired taste that the individual tasting it may or may not like right from the start, and eventually may begin to love, or even may never like it. Some people love to taste and swallow it, some hate it, and some can take it or leave it, just as with nearly everything else in life.