In the future recommend a podcast on the science of brining. It's not easy to understand why if I cooking chicken breast and holding it hot in water drys the meat, but brining it in salt and water before cooking makes it juicy. Possibly a good food science video.
I've been developing a seeded multigrain sourdough loaf with considerable success, if I do say so myself.
I'm interested in putting this on a firm mathematical footing in terms of baker's percentage.
In addition to bread flour, whole wheat flour, and rye flour, I'm using pumpkin seeds, flax seeds, sesame seeds, cracked wheat, and medium cornmeal.
So do I add grams of the "extras" as I calculate hydration? Perhaps I count the cornmeal and the cracked wheat but not the whole seeds?