Slovak Doughnuts

Ingredients

• 1/4 lb Butter
• 7 c Flour (Approx)
• 1 pk Yeast
• 1/2 ts Vanilla
• 1 ts Salt
• 1/2 c Sugar
• 4 Egg yolks
• 1 Egg
• 1 pt Scalded, cooled milk
• 1/2 x Grated rind, lemon or orang