Battle Castle host Dan Snow reveals what the Teutonic Knights at Malbork Castle in Poland ate and drank, and how their meals were prepared and brought to them during life in the Middle Ages. This stronghold, believed to be the largest brick castle in the world, was built by Christians during the Baltic Crusades. The fortification, historically known as Marienburg, was besieged by Polish and Lithuanian forces after the Battle of Tannenberg in 1410, and defended by Heinrich von Plauen.