Kadoya Ramen is a Japanese ramen restaurant near Seoul National University Station in Seoul that serves tonkotsu, miso and shoyu ramen along with tsukemen and rice bowls. The noodles are fresh, cooked to a chewy texture, and the tonkotsu broth is rich, with garlic added and a spicy green onion topping available. There are single seats suited to eating alone, food comes out quickly, and rice is free in unlimited portions. The space is small, so lines form at mealtimes, and the ramen and rice bowls are on the salty side.