Sanguine was disguised as a patron at a bar, drinking like a fish. He downs tankard after tankard. Then when one bar cuts him off, he finds the next. He sips the sweetest brandy in Cyrodiil, the most genuine mead in Skyrim, and the finest sujamma in Solstheim. Finally, you find him dressed up as his human disguise, Sam Guevenne. He chuckles as you approach.

Sanguine: "Hey! There's my old drinking buddy. Come on, have a swig! I've still got the special stuff from our wild night to remember. You can down as much as you like while you tell me how my rose is doing." He smiles, shaking his head with a smile. It was true what he said, he wasn't known for his thought out decisions.