Coffee was first introduced to Europe in Hungary when the Turks invaded Hungary at the Battle of Mohács in 1526. Within a year, coffee had reached Vienna by the same Turks who fought the Europeans at the Siege of Vienna (1529). Later in the 16th century, coffee was introduced on the island of Malta through slavery. Turkish Muslim slaves had been imprisoned by the Knights of St John in 1565—the year of the Great Siege of Malta, and they used it to make their traditional beverage. Domenico Magri mentioned in his work Virtu del Kafé, "Turks, most skilful makers of this concoction." Also the German traveller Gustav Sommerfeldt in 1663 wrote