Blot up as much of the stain using a white paper towel.
Club soda or white wine may be poured onto the stain. This will neutrilize the it.
Blot up the drink and rinse with water. Blot dry.
If the stain is still persistent, mix 1/4 teaspoon of a clear hand or dish washing detergent (which does not contain bleach or lanolin) with 1 quart of water. Use a dabbing motion to work the detergent into the stain. If spot is being removed continue applying detergent solution and blotting with a white paper towel until spot is removed.