DOUGH: Preheat oven to 400 degrees. In a small bowl dissolve yeast in warm water and set aside. In a large saucepan, over low heat, combine milk, 1/2 cup butter, sugar and salt. Heat until butter has melted, stirring occasionally, do not bring to a boil. Remove from heat, pour into a large mixing bowl, beat in eggs and yeast mixture. Gradually add 3 cups of flour, until combined. Slowly add 3 more cups of flour, mix well. Turn dough onto a buttered surface. Knead dough with buttered hands, do NOT use more flour, butter hands frequently. Put dough into a large buttered bowl, cover with a dish towel, let rise until dough has doubled in size.