When a professional bartender makes a drink,it may appear that the bartender starts pouring mixers and alcohol at will.However, the bartender is a highly trained professional who is following a recipe that been costed out by the proprietor.The bartender must follow the recipes developed by the establishment's management in order for the establishment to make a profit.If the bartender does not follow the recipes,or if the establishment does not have standardized drink recipes,quality,and profit cannot be assured.