 The cookout favorites include cheeseburgers, chicken breasts, potato salad, ice cream, among other things. The survey shows a year-to-year double-digit increase in the cost of beef and lemonade, while there are drops in the cost of chicken breasts and potato salad. The retail price for two pounds of ground beef increased 11% from last year. While costs have continued to increase, experts say the U.S. still has one of the most affordable food supplies in the world, with Americans spending a smaller percentage of their income on food...