Hi Jimbo, The question usually resolves into 'legally food safe' and 'common sense food safe' so if your bowls are for sale, it's really your decision rather than our answer. A finish safe for a turner's table isn't always safe for his customer's table.
If this polish is shellac based, FWIW shellac is used to coat pills and candies. There's some evidence that wood itself has antiseptic properties.
Excepting from their garden, people have no idea who or what has touched their salad greens and fruits on their long journey to the table. They can be washed but not sterilized and are likely less safe than any finish that we use, once it's cured.
Being facetious, the Myland's finish can't be shipped via air so I guess these bowls shouldn't be used for in-flight meals. Aarrh!
Being serious, IMHO, If function dictates form & finish then a stable fruit or salad bowl with _no finish is the most attractive.
Turn to Safety, Arch Fortiter
formatting link