Wonjo Seorin Nakji is an octopus restaurant near Jongno and Gwanghwamun in Seoul that serves nakji bokkeum with bacon and sausage. The bean sprouts, bacon, and sausage are boiled first, then the octopus is added and mixed in, and more spicy sauce can be added. The restaurant has operated for over 20 years, starting from its days in a hanok before the Remeir Building was built. The nakji bokkeum is very spicy, so it is hard to eat for those who cannot handle spicy food.