Wood cutting boards add warmth, beauty and function to kitchen decor. Proper sealing and maintenance are critical to the durability and safety of these popular kitchen tools, whether you use your board only for food prep or also for cutting. Preserve the beauty and usefulness of either a new or old board in a few basic steps.
Clean and thoroughly dry a used cutting board before attempting to refinish it.
Place a new, unfinished board or a used board on your work surface. Check for nicks or splinters that might break loose or embed in food.
Use fine sandpaper to smooth the top, bottom and edges of your board. Remember to use a lightly dampened rag to remove any sawdust, and then use a clean kitchen towel to dry the board thoroughly.
Pour food-grade mineral oil onto a clean, dry rag. Liberally apply the oil to your cutting board, moving in the direction of the wood grain. Continue applying mineral oil until you cover the entire surface of your board, being careful to coat the sides and bottom of the board, as well.
Stand your board on its end or on its side, and allow it to absorb the oil for 15 minutes.
Use a clean, dry rag to remove any excess oil remaining on the surface.
Repeat Steps 4, 5 and 6 two to three more times to ensure that your cutting board is thoroughly coated. This also improves the board's water resistance.