Large walnut hollow form with a dead branch opening and a touch of spalted sapwood. I didn't intend to extra ring, or faux lid, on top. I wanted it smooth curve to the spout. But the orignal 2" bore, from the bottom, went too deep - or I tapered the top slop too soon. Regardless, that top is really thin and I didn't want a 2" opening... 14x8" Finished with linseed oil and Mahoney's Walnut Oil Wax.