While noodles are served in a clear, golden, and lighter broth in Osaka, the noodles are served with a blackish, strong broth in Tokyo.
In Tokyo, tempura is made with seafood, it's cooked with vegetables in Osaka.
Onigiri is famous across Japan, but the shapes vary from region to region. So, while you will find round onigiri in Osaka, Tokyo’s onigiri has a triangular shape.
You will find Nigiri sushi in Tokyo made with seafood easily available from the nearby Tokyo Bay, but in Osaka, you can try out oshizushi, a type of square-shaped pressed sushi.