Question: what are gandalf and bilbo smoking?
Answer: Popular hobbit varieties of pipe-weed soon included Longbottom Leaf, Old Toby (named after Tobold Hornblower and revered by Bilbo Baggins), Southern Star, and Southlinch, which was grown in Bree. The Wizard Gandalf learned to smoke pipe-weed from the Hobbits and was known to blow elaborate smoke-rings.