Friselle are my signature housewarming gift. My friends have deemed them “addictive”, and claim to throw parties just so I will re-stock their stash.
This is a recipe where substituting whole-grain flour is not the best idea. But, if you must, a blend of 50% wholegrain and 50% unbleached still works fairly well.
If your dough seems too dry after mixing, add cold water in small amounts. If the dough is too wet and sticky it will be too difficult to work with. (If your dough is too wet, add flour gradually).