Description"A biga, or 'starter', adds flavor and extra leavening power to bread dough."
3/4 teaspoon active dry yeast
1/2 cup warm water
3 1/2 cups unbleached bread flour
1 1/4 cups cold water
#1 : Place the warm water in a small bowl, and sprinkle the yeast over the top. Let stand until yeast has dissolved and is foamy, about 15 minutes.
#2 : Measure flour into a large bowl. Make a well in the center, and pour in the yeast mixture and cold water. Use a sturdy spoon to mix it together until sticky and difficult to stir, but nevertheless thoroughly combined. Cover and allow to ferment for 24 hours in the refrigerator before using.
#3 : Store in the refrigerator for up to 2 weeks. To use, rinse a measuring cup in cool water, scoop out the amount of starter needed, and bring to room temperature.