backo is a fairly straight forward
tobacco flavor, one of the better "analog imitators" that i've tried. Don't get me wrong, this isn't like licking a dirty ashtray, think more along the lines of a slightly sweet pipe
tobacco or lightly flavored British cigarette, and you're in the ballpark. At least, thats what I think it tastes like, but as i'm sure you have read here before, YMMV