Cocktail College Dale De Groff, the "King of Cocktails" so often seen in these pages, has teamed up with the Culinary Institute of America to create a two-tape video series to assist restaurateurs, managers or any other hospitality professional who wants to improve the bottom line through increased beverage service and sales. Bar Essentials includes two separate tapes: Liquid Assets, a 30-minute program that uses four classic cocktails to demonstrate the cardinal rules of good beverage service; and Mixology: making Great Cocktails, a 45-minute video detailing the fundamentals of creating mixed drinks and providing the basic rules of good bartending. For more info, or to order the tapes, call 800 285 8280 or go to www.ciachef.edu