If you are travelling to Turkey in winter time you should try Salep. In some places it is also known as Sahlep. Tastes like melted white chocolate with cinnamon shavings on top.
Salep is made out of dried powdered root of Orcid. It is a traditional Turkish winter HOT drink. Have been served since the reign of Ottoman Empire. The starch is mixed with hot milk and some cinnamon on top.
Best place to have Salep is Ozsut Patiserie shops. Salep, like Turkish Delight and Turkish coffee is a must to be experienced drink during your travel to Turkey. But it is only available in winter time.
Salep is also used for ice cream making in Turkey. A region called Maras is known with their sticky ice cream made out of Salep. Best to experience is Mado Patiserie pistacio ice cream.