Yamanobori Ginza Six

Billed as 'an upscale version of your mum's homemade bento', these lunch boxes sure live up to the billing – if your mum made bento with these ingredients, we'd be more than a little surprised. Specialising in bento featuring high-class nori from the Ariake Sea in Kyushu, their core menu options are limited to three bountiful choices: the 'sea' (with salmon and chikuwa), 'mountain' (grilled chicken with ginger) and 'field' (lotus root with shiso, wood ear mushroom tempura) versions. Besides these fancy staples, they have a seasonal nori bento as well, so you can try something different every few months.