Complex sentence: The layers are typically batter, cabbage, pork, optional items (squid, octopus, cheese, etc.), noodles (yakisoba, udon) topped with a fried egg and a generous dollop of okonomiyaki sauce.
Split into simpler sentences: The layers are typically batter, cabbage, pork, and optional items such as quid, octopus, and cheese. Noodles (yakisoba, udon) are also used as a topping with fried egg and a generous amount of okonomiyaki sauce.