Honest Burgers. Dirty Burger. Patty & Bun. Burger & Lobster. Slider Bar. Almost Famous. Lucky Chip. Mother Flipper. And, the daddy of them all, Meat Liquor. With news that New York super-restaurateur Danny Meyer's cult smash Shake Shack is about to hit London, you might wonder if all anyone's eating these days comes mashed between a split brioche-style bun. I love a good burger – who doesn't? – but some of us are starting to suffer from what might be termed patty ennui.