Street food from Prague: Trdelnik. Trdelnik is a cake and sweet pastry. It is made from rolled dough that is wrapped around a stick, then grilled and topped with sugar and walnut mix.
Trdelnik is sold on every corner of Prague. Just look for the sign (below).
Here’s a little video of Trdelnik.
https://www.youtube.com/watch?v=0XqhWC-1_uc&feature=youtu.be