"Bread flour is preferred but all-purpose flour works too and for the water, I just use hot tap water. It’s important to make sure your oven reaches 450° F. (my oven takes 35 minutes). You can re-crisp rolls by placing them directly on your oven rack at 325° F for 5-8 minutes. For the overnight method, simply switch to COOL water and let the dough rest overnight on the counter top for 8 to 24 hours. - Jenny Jones..."