In a large bowl, dissolve yeast in warm water with 1 teaspoon sugar. Add the milk, butter, eggs, salt, 3 cups flour and remaining sugar; beat until smooth. Stir in enough remaining flour to form a soft dough.
Turn onto a floured surface; knead until smooth and elastic, about 6-8 minutes. Place in a greased bowl, turning once to grease the 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 each portion into 12 balls. Place rolls in two greased 13-in. x 9-in. baking pans; cover and let rise until doubled, about 30 minutes.
Bake at 375° for 20-25 minutes or until golden brown. Lightly brush with melted butter if desired. Place pans on wire racks. Serve warm.Yield: 2 dozen.