A cook turns takoyaki on a hot iron griddle at a stall at Kuromon Ichiba Market in Osaka, Japan (officially licensed since 1902, its roots as a trading place reaching back to the early 19th century). The baked batter ball of flour, egg and dashi broth with a piece of octopus has been Osaka's best-known street food since its invention around 1935 by street vendor Tomekichi Endo.