What does semolina do in bread?
Semolina flour absorbs more water than your regular flour because it is made from durum, high protein wheat. That is why it's normal for the dough to feel dry when you're preparing it -- just add a bit of water to it as a workaround. As for the finished product, it gives your semolina bread a nutty flavor, not to mention a lovely crusty (and golden) exterior.