His candy: Is it just moonsugar? Is it refined? Enriched? Chocolate coated? Infused something else that's awesome?
Is there anything I can read to learn more about this mystical moon-man?
I thought the same thing when I was in his shack. I did notice however, that he had buckets hanging over the fire place with a few other alchemical apparatuses. I'd assume that he melts it down somehow to reduce it to a liquid state or mixes it with something to make it less noticeable.
I always wished there was another option to let him continue his "joy-bringing" and even help him, considering the fate of his Khajiit helper.
Seriously, someone should make an Uncle Sweetshare mod, along the lines of the Sanguine quest in Oblivion, where you invite yourself into places you aren't welcome and impose cheer and merriment upon the stuffier citizens and lords. Like it should start with Uncle Sweetshare tasking you to recruit Rieklings as "elf" helpers. Sweetshare, for example could tell you that they're Falmer, and that the Falmer used to travel about spreading joy and cheer. He would then pay you for ever stuck-up, stuffy person you "helped" (Imperial Cult priests, Temple canons, Great House lords, etc.)