Beautiful bowl!
My understanding is that if it's for food you should have skipped the Watco and just stick with
Food-Safe Finishes
Pure tung oil. Extracted from the nut of the china wood tree. ...
Raw linseed oil. Pressed from flax seeds. ...
Mineral oil. Although derived from petroleum, it is colorless, odorless, tasteless and entirely inert. ...
Walnut oil. Pressed from the nuts of the walnut tree. ...
Beeswax. ...
Carnauba wax. ...
Shellac.