How can I make the foamy turbulence you find in a ship's wake?

I’ve learned how to use dynamic paint to create the waves generated by a sailing ship but I haven’t been able to find a way to make the white foam you find in the wake. Like you can see behind this ship for example:

Thanks for the link. He does seem to have it figured out, however I can’t find a clear explanation besides it making use of the particle emitter. Hopefully he replies.

Thanks! That looks like a pretty good solution, I’ll experiment with that.

I need to make foam (froth) from a coffee or cappuccino cup for an upcoming spot, any way that this method could work for something like that?

Dynamic paint is capable of insane miracles… Some food for your brain: