To get rid of a new stain: Apply a clean cloth to blot the stain, and press a warm iron on top of the cloth until the stain is removed. Make sure the iron is just warm — not hot — and don't use any steam. If you'd rather not use this technique, try rubbing the stain with a soft cloth and olive oil or another natural oil.
If this doesn't work, try using mayonnaise or petroleum jelly and leave it overnight. Simply wipe it clean the next morning — the stain should be gone.