I made these for my brother. Sourwood is a rather nice wood to turn and is about as hard as walnut, so it should make a nice muddler. Fatwood is pine heartwood in which the resin concentrates after the tree has died. You can often find it in knots of fallen trees, or the heartwood of stumps. This was my first time turning it--really enjoyable! Smells amazing. Muddler is 9.5" tall, and bottle stopper is 4" tall (not including the stopper itself).