Total newb to whole leaf, but experienced in RYO/pipe cut tobaccos. What surprised me is the harshness of the burley. Accustomed to burley being the least harsh, if not soothing. Besides the body it brings, this is why I love the stuff. Ok, why is the OTC so smooth and the whole leaf the opposite? I am thinking the answer my be the use of PG and glycerin? Aromatic pipe tobacco is drenched in the stuff, like smoking vapor, opposite of harsh, no flavor. Traditional OTC pipe tobaccos like PA, CH, and SWR have some PG, but still good flavor, and zero harshness. I have tried one casing/topping experiment with pancake syrup, helped the harshness somewhat, but not enough. Is PG or glycerin the answer? Newb wants to know... any experience?