When Tokyoites need a quick snack on-the-go, the rice ball is the first port of call – a staple on the shelves of every convenience store. In fact, it’s so good that Yumiko Ukon decided to turn the humble snack into a full-on meal at Onigiri Bongo. If there was a spot to overrule the supermarket, it’s this one, where Yumiko makes over half a million balls in a single year for regulars who can’t get enough.