Basic Chocolate Cake

2 cups sifted cake flour
1 tsp. soda
1/2 tsp. salt
1/2 cup butter
2 eggs, unbeaten
2 squares unsweetened chocolate, melted
1 cup milk
1 tsp. vanilla

Sift flour and measure, the sift three times with soda and salt. Beat butter until smooth; add sugar gradually and blend until light and fluffy. Add eggs one at a time; beat well after each addition. Blend in melted chocolate. Add flour alternately with milk. Add vanilla. Bake off in 2 greased pans at 350 degrees for 30 minutes.