I know this, because it's translated in Bulgaria and it's one of the most watched series. It meens that and by "The Forbidden Fruit" they mean the love between Behlul And Bihter, because your in love with your uncle's wife.
Turkish actress Beren Saat - More "Ask-i Memnu" (Forbidden Love) Promos & Behind the Scenes Also including Kivanc Tatlitug, Selcuk Yontem, Hazal Kaya, Nebahat Cehre