Historically the commercial centre of Japan, Osaka functions as one of the command centers for the Japanese economy. Osaka used to be referred to as the "nation's kitchen" in feudal Edo-era because it was the centre of trading for rice, creating the first modern futures exchange market in the world.
Osaka is known for its food, both in Japan and abroad. Author Michael Booth and food critic François Simon of Le Figaro have both suggested that Osaka is the food capital of the world. Osakans love for the culinary is also made apparent in the old saying "Kyotoites are financially ruined by overspending on clothing, Osakans are ruined by spending on food". Regional cuisine includes okonomiyaki (pan-fried batter cake), takoyaki (octopus dumplings), udon (a noodle dish), as well as the traditional oshizushi (pressed sushi), particularly battera, pressed mackerel sushi).