A syrup made from Black Cavendish pipe tabacco.
Get black Cavendish from your local cigar store. Add a small handfull of black cavendish pipe tobacco to a pot with equal parts sugar and water. Simmer at a low heat for 45 min-to an hour stirring every few minutes. When you feel the taste is at the intensity you like, remove from heat, double strain, and let cool. Once cooled, seal in a glass bottle and store in the fridge. This will last 2-3 weeks.
Credit: Shaun Layton, George Ultra Lounge