In Osaka (the largest city in the Kansai region or West Japan), where this dish is said to have originated, okonomiyaki is prepared much like a pancake. The batter and other ingredients are pan-fried on both sides on either a teppan or a pan using metal spatulas that are later used to cut the dish when it has finished cooking. Cooked okonomiyaki is topped with ingredients that include (similar to Worcestershire sauce but thicker and sweeter), aonori (seaweed flakes), katsuobushi (bonito flakes), Japanese mayonnaise, and pickled ginger (beni shōga).