You can increase with supplements. I take a variety that help me. There are blogs all over the internet. Of course it is all anecdotal and not scientific, but my experiments conclude it to be accurate.
Now with supplements you ingest more water so that really helps as well. I drink at least 96oz a day. The supplements really help with viscosity and color. Also taste. Here’s a link to an external site that tells you ingredients for the “Holy Grail”.
I will tell you the lecirhin really boosts volume and pygeum. Really boosts precum.
Happy experimenting! 
