Taco Biria in Mullae Changjakchon is a Mexican taco restaurant that serves beef, beef cheese, and seafood tacos along with soup. The tacos come topped with plenty of cilantro, the beef cheese taco is paired with beef soup, and nachos and french fries can be ordered as well. On Friday at 5:30 p.m., food came out quickly and the nachos came with a self-service sauce bar. The portions are small for the size of the tacos, and the prices are on the higher side.