To prepare the biga, combine the flours, water, and yeast and mix on low speed with the paddle attachment for 3 minutes, or until thoroughly combined. Transfer to a container, cover, and ferment at 75°F/24°C for 18 hours, until the biga has risen and begun to recede.
To prepare the final dough, combine the flours, olive oil, water, yeast, and biga and mix with