Asiago Ciabatta

Biga:
1 1/2 cups (6 3/8 ounces) unbleached all-purpose flour
1/4 cup (1 ounce) pumpernickel, rye, or whole wheat flour
1 cup (8 ounces) water
1/8 teaspoon instant yeast

Dough:
All of the starter
2 1/2 cups (10 5/8 ounces) unbleached all-purpose flour
1/2 cup (4 ounces) water
1 1/2 teaspoons salt
1/2 teaspoon instant yeast
4 to 5 ounces Asiago or Parmesan cheese, cut into 1/4-inch dice (about 1 cup), plus extra for grating over the top of the bread

To make the biga: 

Mix all of the biga ingredients in a medium-sized bowl until well-blended. Cover the bowl, and leave it at cool room temperature (68°F-70°F) for 12 to 20 hours, until the biga is very bubbly.

To make the dough: 

Mix the biga and the remaining dough ingredients, except the cheese, using an electric mixer set on slow speed, for 2 to 4 minutes. Increase the speed to medium and mix for about 4 minutes; the dough should be soft and slightly sticky. Add additional water or flour if necessary. Mix in the cheese; don't worry if some pieces pop out. Allow the dough to rise, in a greased, covered bowl, for 1 to 2 hours, until it's very puffy. Note: You can also mix this dough in a bread machine set on the dough cycle; add the diced cheese several minutes before the end of the final kneading cycle.

Turn the dough out onto a well-floured surface, and shape it into two long loaves, about 12 x 4 inches each. Place the loaves, floured side up, onto parchment paper (if you plan to bake on an oven stone) or baking sheets. Cover the loaves with a proof cover or well-greased plastic wrap, and allow them to rise for 45 minutes, or until they're very puffy. Sprinkle them with additional grated cheese.

Bake the ciabatta in a preheated 450°F oven for 22 to 26 minutes, until it's golden brown. Remove it from the oven, and cool on a rack. 

Makes 2 loaves.

From King Arthur Flour