Halka tatlisi ("ring dessert" in English) is one of Istanbul's favourite and oldest street foods. Found on every corner and said to help restore one's vigour after hours spent walking the busy streets, the circular dough that's deep-fried to a golden-brown and soaked in syrup has long been associated with the city's seedier side. And it's that connotation that gave rise to its local nickname of the "brothel dessert".
