Wipe down the wood surface with a grease-cutting cleaner and allow the wood to dry before working on it.
Apply mineral oil to wood surfaces where food will be prepared. Rub the oil into the wood using a piece of dry/wet sandpaper. Rub the sandpaper with the grain to prevent damaging the wood's appearance.
Stir clear sealer and pour out a portion into a paint tray.
Dip a foam brush into the sealer. Apply the sealer to the wood surface in long strokes, painting with the wood grain. Paint the entire surface and allow to dry.
Dip a piece of sandpaper into water and sand the surface gently, going with the grain, to rough up the sealer. Allow the sealer to dry.
Apply two more coats of sealer, sanding in between. Do not sand after the last coat.