Mr Pickwicks (map) is a small, and very popular, restaurant on Long Street. The only reason why I refer to it as "dodgy" in the title of this article is because it's not what one could call pretty, quaint, or upper-market - it's really fairly rustic. However, if you're looking for a great burger, with an awesome milkshake - this is definitely a place to try. They actually have an entire page in the menu dedicated to their assortment of awesome milkshakes! :)