The Sasebo burger, touted as being bigger and richer than its fast-food counterparts, is enjoying a nationwide comeback.

The burger was first marketed in Sasebo, Nagasaki Prefecture, for American service members more than 50 years ago. Its big puffy buns encase a juicy handmade patty combined with an omelet, bacon strips and lettuce. The burger comes in many sizes -- the largest of which is up to 30 cm in diameter.

At lunchtime on weekends in Sasebo, the wait for a burger can be as long as a few hours at one popular shop.