sugar. In a roomy bowl, stir 3 cups flour and salt together. Cut in the shortening until blended to a pebbly consistency.
Beat egg slightly and add to the yeast/milk/sugar mixture. Add this to flour mixture and beat well. Add the remaining 5 cups of flour, 1 cup at a time, to make a soft dough. You may not need the full 5 cups to get the right consistency; you don't want the dough too hard or dry.
Knead by hand on a well-floured board for about 10 minutes. Put into a large greased bowl. Cover and place in the refrigerator and use within 8 hours. When wanted, shape the dough into rolls and let stand in a warm room for 1 hour before baking. If you want to use the dough right away, keep at room temperature, shape into rolls, and let rise for 1 hour before baking.
Brush the rolls with a beaten egg for a glossy finish. Bake in a preheated oven 375° for about 20 minutes.
This makes about 4 dozen rolls.