Buttermilk Donuts

1	tablespoon dry active yeast
1/2	cup warm water
1/2	cup buttermilk
3	tablespoons shortening, melted (DO NOT use oil)
3	tablespoons sugar
2 1/2-3	cups flour
3	teaspoons baking powder
1	teaspoon salt
	vegetable oil
2 1/2	cups sifted powdered sugar
1/4	cup milk

1. Dissolve yeast in warm water in a large bowl; let stand 5 minutes.
2. Add buttermilk, shortening, sugar and 1 1/2 cup flour, baking powder and salt; mix well.
3. Add enough remaining flour to make a soft dough.
4. Turn dough onto a floured surface and knead several times.
5. Roll dough to 1/2 inch thick and cut with a 2 1/2 inch doughnut cutter.
6. Place doughnuts on lightly floured surface, cover and let rise 45 minutes or until double in bulk.
7. Heat 2-3 inches of oil to 375°F.
8. (I use my Fry Daddy) Drop in 4 or 5 doughnuts at a time.
9. Cook about 2 minutes or until lightly golden in color, turning once.
10. Drain well on paper towels.
11. Combine 2 1/2 cups powdered sugar with 1/4 cup milk, stir until smooth.
12. Dip each doughnut in glaze while still warm; allow excess glaze to drip off.
13. Cool on wire rack or serve warm