Two simple ingredients — chewy rice cakes and juicy, plump sausage — make up one of my favorite Korean snacks. This street food, also known as so-tteok so-tteok (소떡소떡), is particularly popular at Korean rest stops, where drivers can rest, eat, and recharge after hours on the highway. During my recent trip to Korea, I made sure that I got my hands on this easy-to-eat snack, and I was pleasantly reminded of how delicious it was.