Every trip my son (16) always tries a new and unique candy/snack from a country in Epcot, his favorite park!
We were there the week of Thanksgiving. I don't know about best but certainly unique - Japan, a gelatinous fruit flavored sweet sold in packs of 6, possibly 8. Can't recall the name but did we have fun all trying this. You can barely hold on to it, sweetly floured exterior with a pink soft center, the texture and shape, though small is reminiscent of breast implants! Definitively falls into the "tastes" better than it looks category and boy did we all laugh while trying it!
Last year Japan or China, Shrimp flavored chips, the funky smell upon opening the bag should be warning enough, but we all tried them. Odd but not overly offensive, tasted better than the smell!