My friend and I shared 2 okonomiyakis. One pork and one scallop. To our surprise, the 2 okonomiyakis were actually quite different.
We asked to have all the sauces and toppings on the side. We were worried that the amount of sauce put on the okonomiyaki would overpower everything. It turns out that we found the okonomiyaki sauce to be quite strong. We ended up not having to use much at all.
The scallop okonomiyaki was more runny and had a creamy consistency in the batter. It's probably because scallop holds more water than pork, which was then released into the batter when it was cooked. The pork okonomiyaki was definitely more dry, meaty, and firm.
Both okonomiyakis were quite nice but we liked the scallop more than the pork. The scallop tasted fresh and added a really nice scallopy flavour. If you want to have a legit okonomiyaki, it must have bonito flakes and sour seaweed flakes on top!