Eric,
This is not a quick fix issue. The milky white has, I'm sure, a lot of potential delicate highlights with reflections of the sky, modifying the color as well. That has to be explored with a considerable effort to see what's there in detail. How amenable is the file to being processed in this region of the histogram? Then, it's an artistic decision how to manage the vision of the foam, as what its character should be. Only then can one build the form and detail of the fixed wood.
This, to me, is new ground. I've never seen such a picture where so much depends on these high tonalities.
Asher