James Beard Award-winning chef Christopher Gross, of Christopher's Restaurant and Crush Lounge in Central Phoenix, may be best known for his command of French cuisine, but what most folks may not know is that he makes a damn fine hamburger, too. Sit at a table or belly up to the kitchen bar and start with the eight-ounce patty of perfectly prepared Angus chuck, then choose from toppings of Gruyère, Mimolette, cheddar, or blue cheese, mushrooms, shallots, and crispy bacon on a soft, delicate bun for a sumptuous flavor sensation — just don't call it a "cheeseburger."