 He worked on a Doctorat d'université at the Sorbonne on Ali Pasha of Yannina, and spent 1964 to 1966 in Greece studying fortresses built by Ali Pasha in Epirus.Back in France, his interest in gastronomy and wine grew, from a passing interest which early friends in France had sparked to a serious search for what eluded him.Winroth published his first article on wine on January 31, 1967, in the international edition of "The New York Times", using his first and middle names — the middle (Winroth), a maternal family name, means "wine root" in old Swedish.