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.
There is no way to create a crunchy crust. 
( z1 way :polarity - :manner-of ( z2 create :ARG1 ( z3 crust :mod ( z4 crunchy ) ) ) )