Great Burger Kitchen? No, it's average at best. As a vegetarian I've only had the veggie burgers - the portobello burger is a sad excuse for a veggie sandwich. The mushroom is not a single mushroom but little bits piled on the bun. Cheaper that way I guess? The balsamic onions soak the whole bun and overwhelm everything. It turns the whole burger into a soggie mess. The veggie grain burger is no better. It looks like cat food and tastes like it.