Please be aware that I use Mahoney's Walnut oil for almost all my utility bowls.  It is proclaimed to be food safe  even for those who might have a nut allergy. Because the enzymes that cause the reaction are supposedly removed in the cooking process when it is made. Walnut oil has a semi gloss sheen when buffed. The higher gloss utility pieces have a Tung oil finish that has been used as a food safe finish when cured for over a thousand years.