Artificial piss recipe

In the last year and more with the pandemic and everything, I’ve been wondering if there’s a way to get more piss while social distancing. The only artificial piss recipes I’ve seen on line are for the purposes of passing a drug test. I’m not concerned about that, but I’m wondering if anybody has a good recipe for home-made piss.

What I’ve found is this:

Distilled water
Sodium chloride
Albumin powder (bovine or egg)
Potassium chloride
Sodium phosphate (monobasic)
Urea
Creatinine

These ingredients are all pretty readily available – with the internet pretty much everything is – but I’m wondering how important each ingredient is. I don’t care about passing scientific tests, but I do want it to be passable for the purposes of watersports play.

Anybody have suggestions or experience with this?