Makes 1 deep dish pie shell.

2 c. sifted flour
1/2 tsp. salt
1/2 tsp. baking powder
1/2 c. chilled vegetable shortening
1/4 c. sour cream
1 egg, lightly beaten

Sift flour with salt and baking powder, then cut in shortening until mixture resembles coarse meal. Blend sour cream and egg, pour all at once into flour, and mix briskly with a fork until pastry just holds together. Wrap in wax paper and chill. Roll on a lightly floured board into a circle. Fit into pan, pressing gently to smooth out any air bubbled underneath.