Premise: How to make a rustic bread<br>Assemble all of your ingredients, which are enough to make 4 or 5 loaves of rustic bread. If you want the bread to have the traditional, crunchy crust, buy 1 or 2 unglazed quarry tiles to bake it on. The ceramic absorbs the moisture, creating a crunchy crust.
Hypothesis: The instructions call for glazed tiles.