NEW YORK, April 13, 2011 /PRNewswire/ -- Castello® Blue Cheese is pleased to announce their sponsorship of this year's Bravo's Top Chef: The Tour.  As previously announced by Bravo, the 20-city tour begins April 15th at Soulard Farmer's Market in St. Louis, Missouri and will feature an interactive cook-off between two former Top Chef contestants.  Each cooking "battle" will take place in front of a select group of Top Chef fans and a panel of local judges.  Castello® Blue Cheese will be at each tour stop to meet and greet fans and offer samplings of its award-winning cheeses.