Jawsfood
If you are new to Korea, you have to try Jawsfood. Jawsfood sells food like TTeok-bokki (spicy rice cake) and Kimbop. These types of food are very popular among teenagers because of the cheap price. Also, they are usually around Korean public high/middle schools, so you will be able to spot them easily. Even though there are many different places that sell Tteok-bokki and kimbop, I strongly recommend Jawsfood because they have the cup-rice which is slightly different from kimbop. The cup-rice contains cheese, rice, and ham; it is very delicious. Also, their tteok-bokki is spicy in a delicious way. Some places make tteok-bokki way too spicy and it is difficult to eat. However, the Jawsfood controls the level of spiciness perfectly! Try to find the logo below when you are in Korea!