Mugenswitch in Yeonnam serves iekei ramen, a blend of tonkotsu and shoyu broth. The thick noodles come with spinach, seaweed, and smoked chashu, and you choose noodle firmness, seasoning level, and oil amount. Order at a kiosk, eat at the counter, and add doubanjiang, minced garlic, or vinegar. The broth and noodles are high in salt, so even the standard setting tastes salty.