Can’t pay for your meal? Then you’ll have to wash up! It’s a trope beloved of TV scriptwriters - less so of restaurateurs in need of actual money.

But in Tokyo’s Mirai Shokudo eaterie, you can swap food for a 50-minute shift. Patrons can wash up, serve up, or clear up - great news for the hard-up. And if you’re old-fashioned, your money is still good here.