Fancy a Half a Cock? Or some Cologne caviar? Cologne has almost as many national specialities as Frankfurt has skyscrapers. And choosing what to try can be daunting with meaty dishes like "Himmel und Äd" to vegetarian treats like "Halve Hahn" or desserts like "Mutzenmandeln". If you're heading our way, here are our top tips to eating like a local.