John Boos Mystery Oil is a 16 ounce/473mL product suitable for maintaining and preserving various wood food preparation surfaces such as cutting boards, butcher blocks, countertops, and utensils. It is proudly manufactured in the USA using natural materials. For optimal upkeep, apply John Boos Mystery Oil to your cutting board or butcher block once a month and let it absorb overnight. Increase the frequency if your board is new or if you reside in a dry/arid climate. Regular oiling helps prevent wood from becoming dry, splitting, or cracking. Additionally, this product is NSF Certified, ensuring its safety for use on food preparation surfaces.