Why does miso soup go cloudy?

Real miso soup, once the miso paste has been added, will look cloudy after a few minutes. In fact, if you peer in closely, you can see that there is actually a lot of movement! The proteins in the miso paste separates in the liquid, creating a clearer broth on top and a creamy cloudiness a few millimetres below the surface.

This is absolutely normal and actually a sign of proper miso soup, just give it a quick stir before drinking it.