Dissolve yeast and 1 teaspoon sugar in 1 cup warm water in a large bowl. Let set until foamy, 5-10 minutes. Combine yeast mixture, remaining sugar, 2 cups warm water, salt, vegetable oil and 4 cups flour. Beat well for 5 minutes; add remaining flour, 1 cup at a time, until a stiff dough is formed.

Turn dough out of bowl onto a well-floured surface and knead until smooth and elastic, adding flour if needed. Form into a ball and place in a weel-greased bowl; turn to coat surface. Cover and let rise in a warm place, free from drafts, until doubled, 60-90 minutes. Punch down dough, divide into three portions and allow to rest on a lightly-floured surface for 10 minutes.

Shape into loaves and place in three greased 8 1/2 by 4 1/2 by 2 1/2 inch loaf pans. Cover and let rise in a warm place, free from drafts, until doubled, about 60 minutes. Bake in a preheated 400 degree Fahrenheit oven for 20 minutes, or until crust is golden brown and bread sounds hollow when tapped. Remove from pans; cool on wire racks. Note: This bread can be easily made in a heavy duty mixer! Makes 3 loaves