In a large bowl place scalded milk, sugar, salt and shortening, stir. Cool until lukewarm.
In a small bowl, stir yeast into warm water. Stir until dissolved. Stir into lukewarm mixture.
Add flour, stir until well blended.
Cover with towel and let rise until doubled. Stir batter well, then beat for about 30 seconds.
Pinch off and fill greased muffin pans. Bake at 400 for 25 minutes.