Add eggs, 1 at a time, beating well.

Blend in sour cream.

Sift flour, measure, sift again with baking powder.

Add flour mixture in 4 or 5 parts to first mixture, blending well each time.

Add vanilla.

Pour into well-greased 2 to 2 1/2 quart mold or 9" tube pan, and bake at 350 degrees for one hour, 25 min.