A yatai is a small, mobile food stall in Japan typically selling ramen or other hot food. The name literally means "shop stand."
The stall is set up in the early evening on pedestrian walkways and removed late at night or in the early morning hours before commuters begin to fill the streets. Menus are usually limited; Japanese cuisine (often of Chinese origin) is of course most common, but Western cuisine yatai are not unknown. Beer, sake and shouchuu are usually available. A salaryman might relax with colleagues over dinner and drinks at a yatai on his way home from work.
Fukuoka is well-known within Japan for having many yatai.
Yatai are also set up temporarily for Japanese festivals, selling foods for spectators, such as yakisoba, kakigouri, takoyaki, and okonomiyaki.
An Unadon (eel bowl) is a popular donburi (rice bowl) dish made with unagi kabayaki, grilled eel coated with a sweet sauce.
Variations include unajuu (a very similar dish served in a black box rather than a donburi bowl), nagayaki (the eel and rice are served separately), and hitsumabushi.
There are two styles of grilled eel. One is the Kantou region Style, in which the eel is roasted first, smothered, and finally grilled with sauce. The other is the Kansai Region Style, which is grilled with sauce only. It is traditional to add sanshou (Sichuan pepper) as a condiment.
Unadon takes its name from the Japanese words Unagi no Kabayaki (grilled eel) and donburi (for rice bowl dish).