Trdelník (originally called Kürtőskalács) is a traditional Hungarian cake and sweet pastry, originally coming from Székely Land, Transylvania, which is home of the Székely Hungarians. It also is known within the culinary heritages of Slovakia and the Czech Republic. It is made from rolled dough that is wrapped around a stick, then grilled and topped with sugar and walnut mix. Nowadays, trdelník is again gaining popularity as a sweet pastry in Slovakia and the Czech Republic and is very popular among tourists.
It’s roasted over a fire and is turning, hence the in-motion unsharpness (0.3 sec).