I came across this fascinating case report from a physician describing a patient with diabetes back in 1828.
My favourite quote from the piece is:
“The urine was found to be in colour a light straw, transparent, like highly clarified wine, wholly without odour, of a very pleasant sweet taste.”
I also enjoyed the part where he describes boiling the urine and being left with an ounce of sugar in the pan:
“On boiling, 8 ounces deposited 1 ounce of pure molasses.”
You can check out the full piece in the New England Journal of Medicine.