Heat water in a glass measuring cup in the microwave for 2 minutes.
Place honey in a large mug. Add hot water and bourbon; stir until honey is dissolved. Squeeze lemon wedge into the mug and discard. Stir with cinnamon stick; leave in the mug. Drop the thin slice of lemon into the mug for garnish.
Try substituting apple brandy, applejack, apfelsaft, or Calvados. Can also add a few scrapes of freshly ground nutmeg. You can also leave the lemon wedge in the mug, if the mug is large enough.