Ingredients
2/3 cup (150 ml) cocoa
1/2 cup (125 ml) boiling water
2-1/2 cups (600 ml) sifted cake flour
1-1/4 tsp (6 ml) baking powder
1 tsp (5 ml) baking soda
1/4 tsp (1 ml) salt
1/2 cup (125 ml) butter
1 tsp (5 ml) vanilla extract
2 cups (475 ml) sugar
3 egg yolks
1 cup (225 ml) sour milk (See Note)
3 egg whites, beaten to stiff, not dry,peaks
Seven-Minute Frosting:
1-1/2 cups (350 ml) sugar
1/3 cup (80 ml) water
2 egg whites
1 tbsp (15 ml) light corn syrup
1/8 tsp (1 ml) salt
1 tsp (5 ml) vanilla extract
3 oz (84 grm). unsweetened chocolate (optional)
Preparation
Mix cocoa and water together; set aside to cool.
Sift flour, baking powder, baking soda and salt together; set aside.
Cream butter with vanilla; gradually add sugar creaming thoroughly. Add egg yolks, one at a time, beating throughly after each addition. Add cocoa mixture and beat until well blended.
Beating only until blended after each addition, alternately add dry ingredients in thirds and sour milk in halves to cream mixture.
Fold in beaten egg whites.
Turn batter into 2 prepared 9-inch layer cake pans and spread evenly to edges.
Bake at 375 degrees (200 C.) 25 to 30 minutes, or until cake tests done.
Cool in pan on a wire rack about 10 minutes.
Then run spatula gently around sides of pan.
Cover cake with wire rack and invert.
Lift off pan and immediately turn cake right side up on wire rack.
Cool completely.
Fill and frost with frosting below.
Seven-Minute Frosting:
Combine all ingredients except vanilla in the top of a double boiler; beat with hand rotary or electic beater until blended.
Place over boiling water; beat constantly until mixture will hold peaks.
Remove from water; add vanilla.
Beat until cool and thick enough to spread.
For Seven- Minute Chocolate Frosting: Melt 3 ounces (3 squares) unsweetened chocolate and set aside to cool. Follow recipe above; blend in chocolate when mixture holds peaks.
Comments
Note: Add 2 T. vinegar or lemon juice to 1 pint milk. Allow to stand at room temperture 30 minutes, then return to refrigerator.
Source:
American Family Cookbook (Culinary Arts Institute)
