The following is an adapted version of an article originally published in Hungarian in Magyar Krónika. The world-famous purple chocolate—Milka’s success is obviously due primarily to the quality of its chocolate, but a Hungarian advertising expert also played a major role in its success. This is the story of Sándor Szabó from Orosháza. Once upon a time, three advertising experts visited the Milka factory in Lörrach to create new advertising plan…