Ruyan #4 - Dekang - The original was sort of a
tobacco-caramel... cotton candy-like flavor ;-)
anyway, an incredibly popular flavor that most vendors tend to have their own take on... The basic premise seems to be
tobacco + Caramel + Vanilla + or....
In other words, not many folks' RY4 tastes the same.
Some of my favorites include the original Dekang, Backwoods Brew, Janty, nHaler's R Y NOT, Vapor Talks Dulcis... Vaperite and FSUSA have some very interesting takes... Vapor station has some potent and sweet mixes...
Many threads on this topic...
Here's a good video:
http://www.youtube.com/watch?v=YOmCbS4_0H0