Silver Cake (White Cake)

Directions

1. 1
   Sift flour once; measure.
2. 2
   Add baking powder and sift together three times.
3. 3
   Cream butter thoroughly.
4. 4
   Add sugar gradually and cream together until light and fluffy.
5. 5
   Add flour alternately with milk, a small amount at a time.
6. 6
   Beat after each addition until smooth.
7. 7
   Add lemon extract.
8. 8
   Fold in egg whites.