Sprinkle Yeast Into Water In Large Bowl. Scald Milk, Add Butter And Salt And Cool To Lukewarm. Meanwhile, Beat Eggs And Sugar Until Light. Add Milk Mixture To Eggs, Then Stir Into Yeast Mixture. Gradually Beat In 3 Cups Of Flour With A Wooden Spoon. Stir In Enough Additional Flour To Make A Soft Dough That Is Workable And Leaves The Side Of The Bowl. Turn Dough Out Onto A Lightly Floured Board And Knead For About 10 Minutes, Adding Additional Flour As Necessary. Knead Until Dough Is Smooth And Elastic. Put Dough In Lightly Greased Bowl, Turn Once To Grease Top. Cover And Let Rise In Warm, Draft-Free Place For 1 To 1 1/2 Hours Until Doubled In Bulk. Punch Down And Let Rest For 10 Minutes.