90 percent of the time I use maple. But I've also used Hickory, Alder, Mesquite, Apple, Plum, Birch, Beech, Oak, Cherry, Walnut, Ash, Peach, Pear, Linden, Lilac, Rose, Grapevine, Pecan, Pine cones, Cedar.
Right now I've got some Black Locust aging that I want to try.