Which oils are food-safe for treating solid wood worktops and butchers blocks?
In a commercial setting it would be a rare thing to TREAT what you are thinking about. In that reagard however; you can certainly find what suits your need in a general search with keywords. Your most important issue as it regards a surface that comes in contact with food; is NO petroleum based products, and NO Oils; etc; that can become Rancid, and be a bacteria playground. It’s proven that olive oils found in Amphorae; are still viable after 4000 years (plus/minus). I’d want to know what will not have ANY effect on any food substance that comes in contact with any RAW wood finish work surface.