In a large bowl, combine water, yeast and sugar. Let sit until yeast begins to proof and becomes foamy, about 5 minutes. Add oil, salt, 4 1/2 cups bread flour, cornmeal and herbes de Provence. Mix until flour is incorporated and then scrape dough out onto a lightly floured surface. Add more flour if dough is too sticky to work with.

With your hands, knead dough until smooth and elastic, dusting with flour as needed to prevent sticking. Shape dough into a ball and lightly oil the outside of it. Place dough in a bowl and let proof in a warm place for 45 minutes or until dough doubles in bulk.

Cut dough into 4 pieces and shape into rounds. Oil the rounds lightly and let rest, covered with plastic wrap or a towel, for 10 to 15 minutes. You may now shape the dough.