1 Day Sourdough Bread

1-1/2 C bread flour
2 T instant potatoes
2 T sugar
1 pkg. yeast
1-1/2 C lukewarm water
4-1/2 C bread flour
1/3 C sugar
1/2 C oil
2 t salt
Enough lukewarm water to make a fairly stiff dough

In a large mixing bowl, mix first 5 ingredients well and let sit 1-1/2 hours or until doubled in size. Add remaining ingredients. Turn out on floured board. Knead 5 minutes. Put back in bowl that has been oiled. Cover; let sit for 1 hour or until doubled. Remove and make into 3 loaves. Brush top with oil. Cover. Let rise until doubled. Bake at 325 degrees until done (about 20-25 minutes). Remove from pans. Butter top while hot.