San Francisco Sourdough Bread

Ingredients

• ✓ 4 ¾ cups bread flour
• ✓ 3 tablespoons white sugar
• ✓ 2 ½ teaspoons salt
• ✓ 1 (.25 ounce) package active dry yeast
• ✓ 1 cup warm milk
• ✓ 2 tablespoons margarine, softened
• ✓ 1 ½ cups sourdough starter
• ✓ 1 extra large egg
• ✓ 1 tablespoon water
• ✓ ¼ cup chopped onion