Steps:

• In a large bowl, dissolve yeast in warm water. Add the Sourdough Starter, eggs, sugar, oil, salt and 3 cups flour. Beat until smooth. Stir in enough remaining flour to form a soft dough., Turn onto a floured surface; knead until smooth and elastic, 6-8 minutes. Place in a greased bowl, turning once to grease top. Cover and let rise in a warm place until doubled, about 1 hour. , Punch dough down. Turn onto a lightly floured surface; divide in half. Shape into loaves. Place in 2 greased 8x4-in. loaf pans. Cover and let rise until doubled, about 45 minutes. , Bake at 375° for 30-35 minutes or until golden brown. Remove from pans to wire racks to cool. Brush with butter.

Steps:

• Make sourdough starter at least 1 week before making bread. In large glass bowl, dissolve 1 1/2 teaspoons yeast in warm water. Stir in 3 cups flour and 4 teaspoons sugar. Beat with electric mixer on medium speed about 1 minute or until smooth. Cover loosely; let stand at room temperature about 1 week or until mixture is bubbly and has a sour aroma. Transfer to 2-quart or larger nonmetal bowl. Cover tightly; refrigerate until ready to use.
• Use sourdough starter once a week or stir in 1 teaspoon sugar. After using starter, replenish it by stirring in 3/4 cup all-purpose flour, 3/4 cup water and 1 teaspoon sugar until smooth. Cover loosely; let stand in warm place at least 1 day until bubbly. Cover tightly; refrigerate until ready to use. To use, stir cold starter; measure cold starter, and let stand until room temperature (starter will expand as it warms up).
• Measure 1 cup of the sourdough starter and all remaining bread ingredients carefully, placing in bread machine pan in the order recommended by the manufacturer.
• Select Basic/White cycle. Use Medium or Light crust color. Do not use delay cycle. (Total time will vary with appliance and setting.) Remove baked bread from pan; cool on cooling rack.