This is a trick question,
since E V E R Y B O D Y knows no FOOL would put CANDY artifically MANUFACTURED in some factory-oily-machine into your unimaginably sensitive organic bod, for which sensitivities and reactions and influences are NOW ONLY B A R E L Y starting to become understood by nascent science (taking the long - time view of..we've only just begun to understand).
Best "candy" is an apple, orange, banana, grapes, mango, etc.
For me, best "candy" is a metaphorical question but this is not an X-rated forum.
Myself, I like avocados from my own profitable seaside orchards, with plenty of H-O-T salsa in the seed depression (hotter than that, please).
All you in New York & Chicago & Seattle & Tokyo & Stockholm & Boulder probably enjoyed eating wonderfully nutritious stuff from my properties.
Live long & prosper!