To enrich semen one would have to consume lots of chocolate and junk food, also start smoking as this increases the flavour. However avoid drug use as that adds to the "funky" taste.
There are a few ways, but I do know the following ways:
1. Provoke your penis, what do I mean, yanking it up and down, if you want to try this, dont yank it up too hard or it'll really hurt, but...
Most men produce their own semen which is contained inside their testicles and ejaculated through their penis. It is also possible to get some semen form a spem bank, but its origin will aways be...
Well, first of all, dispose of it. Sperm is absolutely harmless chemically and biologically unless you have some diseases. So it can be washed down any drains, or wiped up with a tissue and discarded...