Mineral oil is commonly used to coat/maintain butcher block cutting boards, and as a storage coating on high carbon knives. It is recognized as safe by the FDA

Mineral oil is commonly used to coat/maintain butcher block cutting boards, and as a storage coating on high carbon knives. It is recognized as safe by the FDA when produced according to food safety guidelines and under quality control. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=172.878 https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfr...