FOR THE SPONGE, whiskyeast into water to disperse and stir into flour until smooth. Cover and let rest for 30 minutes. FOR THE DOUGH, combine flours and form a well, placing salt and sponge inside. Mix to form dough.
2
Knead 8-10 minutes until smooth and elastic. Place in a lightly oiled bowl, cover and let rise until doubled. Saute onion in oil until lightly browned.
3
Blot off all excess oil. Deflate dough by pressing out with your hands.
4
Gently knead in onions and allow to rest for 10 minutes. Divide dough into 3 pieces, place in greased casseroles, and make 3 slashes in the top of each loaf. Cover with oiled plastic wrap and allow to rise until doubled.