Removing the Foil on the Neck of a Wine Bottle
The neck of a wine bottle has two ledges also called lips, one very near the top of the neck, the other about three-quarters of an inch below. Foil cutters, those easy to use plastic disks with a blade inside, cut the oil at the first ledge near the very top of the bottle. If you are using the knife blade of a waiter corkscrew, you should cut the foil below the second ledge. Sommeliers prefer the cut the foil at this point because it looks cleaner and tends to aid in minimizing drips since there is no ragged edge of foil for the wine to dribble over.