Mix together egg, salt and sugar.
Dissolve the yeast in water.
Combine egg mixture with yeast mixture.
Stir in half the flour.
Stir in remaining flour.
Add shortening, stirring to combine.
Let rise until double in size.
Stir down and refrigerate.
Form into rolls 1 1/2 hours prior to baking.
Let rise in warm place.
Bake in pre-heated 350 degree oven until golden brown.
Bread dough will last a week in refrigerator.