In the Big Easy, Robert Irvine takes a bite out of the most decadent grilled cheese sandwiches he's ever tasted. Mexican fried cheese and braised oxtails are sandwiched between cheese-stuffed pupusas. In Boston, childhood favourite mac and cheese is oozing with a luscious cheesy sauce over thick pasta noodles and topped with BBQ pulled pork. Finally, in San Antonio, two traditional Middle Eastern cheese desserts provide some sweet, salty bliss.

• Robert Irvine