This is a simpler and quicker version of ohitashi. For another way to make ohitashi please refer to broccoli ohitashi reshipe. This is one of the popular way to eat boiled greens in Japan, and spinach and broccoli rabe are commonly used, but broccoli can be used as well.
In this method, simply boiled greens are cut in bite size, and served with katsuobushi flakes on top. This side dish is usually served in individual small dish. Desired amount of soy sauce or ponzu is dropped on the individually served ohitashi just before eating.