Ajisen Ramen specializes ramen in tonkotsu soup, which is pork bone soup. It has lots of collagen in the soup which is good for health and prevents aging. The noodles themselves are made from wheat flour and cooked to al dente. With the addition of Senmiyu (our secret recipe), a rich brown sauce that accompanies the Tonkotsu soup, a bowl of Ajisen Ramen is tasty, delicious and satisfying.