I start with a sealer coat of thinned shellac, brushed carefully on all surfaces. When dry, I sand the bowl with a foam-backed 320 grit pad, then buff vigorously with a well-worn, small 320 grit sanding mop. I reapply the shellac, and buff again until the bowl feels silky and has a soft sheen. For a more formal look, I spray on a coat of gloss lacquer. Depending on the type of wood, that may be all that's needed, or a second coat of lacquer may be desired.
Quick, easy, and very effective!
