Not to be confused with Taiyaki. (literally fried or baked octopus)'s a popular Japanese dumpling made of batter, diced or whole baby octopus, tempura scraps (tenkasu), pickled ginger, and green onion, topped with okonomiyaki sauce, green laver (aonori), mayonnaise, and katsuobushi (fish shavings), first popularized in Taisho-era Osaka.(External Link) There's a similarly named dish called ikayaki but it's a broiled whole squid and bears no resemblance. Yaki's derived from which simply means "to… (More on Takoyaki)