Know Your Korean Food: Tteokkochi by Joel Park
This is just rice cake on a stick, fried and covered in a sweet gochujang sauce. It seems to be hard to find nowadays (I may be wrong), but if you run into it, it's delicious and cheap. I got this from a cart on top of the hill that leads to Bogwangdong from Itaewon, by Chunghwa Apartments, for 500 won. Good stuff.
Joel Park originally hails from Seattle. He is a world traveler, but the taste of Korea keeps bringing him back. You can contact Joel here: Joel Park.