In a large bowl, combine sugar, butter and salt. Add scalded milk and mix thoroughly. In another large bowl, add yeast to warm water to soften. Add eggs to yeast, then beat in 4 cups flour. Then add 3 to 3 and a half tablespoons flour to make dough soft.
Transfer dough to a well-buttered bowl. Brush dough with butter, cover with wax paper and store in refrigerator until ready to use. Do not let dough rise.
To make doughnuts: Roll out dough to a quarter inch thick and cut into 2 inch squares. Fry in deep fat fryer at 370º until lightly golden. Drain and dust with confectioners' sugar. Serve with ice-cold milk or cafe au lait.