I've blogged about pizza and burgers for years. So of course I've seen a fair share of pizzaburgers on various diner and burger joint menus. I've never eaten one—if I have, it was so long ago I don't remember. Maybe it was the purist in me that held me back from mixing two perfectly excellent dishes that can (and some say should) otherwise stand on their own. That all changed last night, when I found myself at Soup Burg on Manhattan's Upper East Side. More