IPPINKA says:

Kurukuru Nabe, which means “Round and Round Pot” in English, is a self-stirring pot developed by Dr. Watanabe, a dentist from Japan. As its name suggests, the pot moves the contents around in a circular motion without any effort from the user.

As the water heats up, the spiral wall creates a circular flow on the content. Due to this action, water boils faster and the contents gets cooked faster as well. Thus, in theory, this concept is not only for the lazy, but also for the practical interested in saving time and energy.

I'm guessing it's good for cooking ramen?

For sure!!