Some days you take a whiff it's easy: "Yep. Definitely had asparagus last night." Other times though, it's not so clear. This urine wheel by Ullrich Pinder from 1506, provides possible diagnoses based on color, smell, and taste. [via kottke]
Taste? That’s crazy. I know in India they drink their own urine to cleanse their system but in North America it is unheard of.