Just a few minutes from my apartment is a vegan burger restaurant called Himiso 하이미소. It caught my eye when I saw the vegan sign hanging from the doorway. They sell a variety of veggie burgers, soft drinks, chips, and even churros for dessert.
I got the sweet potato burger set. It comes with a soda and fries (although they were closer to potato chips/slices). It was only about 5 or 6 thousand won total which was a great price. I definitely want to go back, especially to try the other things on the menu, like their most popular brown rice burger or their fruit smoothies.
Also, the service was excellent. The owner was very friendly and able to assist in Korean or English.
Eunpyeong-gu, Eunpyeong-ro 55, Seoul, South Korea
Near Eungam station exit 2.