Gayagaya is a Japanese ramen restaurant in Seoul that serves tonkotsu, miso, and karai ramen. It sits in an alley near Ewha Womans University Station in Mapo-gu. The tonkotsu gyokai mixes pork bone and seafood broth and comes with an anchovy aroma. The ramen is served with a chive salad in soy sauce, eggs are ordered separately, and the portion is small for an adult meal.