The Röstigraben, (ˈrøːstiˌɡraːbən), literally ‘Rösti ditch’, also transcribed Röschtigraben in order to reflect the Swiss German pronunciation ˈrøːʃtiˌɡrabə, is a humorous term describing the cultural differences between, on one side, the German-speaking Switzerland and, on the other, the French-speaking parts, the Suisse roma...