How to clean your kitchen sink and make it shine! Start by scrubbing the sink with baking soda and a soft sponge. Rinse the sink with vinegar and watch it foam. Then rinse with fresh water. Rub the newly cleaned sink down with the rind of a lemon or orange peel to deordorize and keep it's new shine. Finish by buffing the sink with a paper towel with a dab of olive oil. Full steps in link.