En is a Japanese restaurant in the Tenjin underground shopping arcade in Fukuoka that serves dashichazuke, meat udon, and onigiri. Its main dishes are ochazuke, rice in a broth with katsuo bushi flavor, and meat udon with minced ginger. It opens early in the morning and food comes out quickly, and card payment is made directly at the counter. The cold udon is on the sour side.