Note: This recipe makes a 2-layer, 9- inch cake. Double the recipe to make a 3-layer, 9-inch cake.
2 eggs, separated
1/2 cup butter, softened
1 cup sugar
2/3 cup milk
3 teaspoons baking powder
2 cups cake flour
1 teaspoon orange extract
Orange Filling (see recipe below)
Boiled Frosting (see recipe below)
2 small mandarin (or other small) oranges, if desired for garnish
Step 1. Preheat oven to 375° F. Grease and flour two 9-inch baking pans.
Step 2. Beat the egg whites until stiff peaks form. Set aside.
Step 3. In a mixing bowl, cream together the butter and sugar. Add egg yolks and milk; beat to combine. Add flour and baking powder; beat until smooth. Fold in the beaten egg whites.
Step 4. Evenly divide the batter across the prepared pans.
Step 5. Bake for about 25 to 30 minutes or until wooden pick inserted in center comes out clean.
Step 6. Remove from oven and let cool for 15 minutes, then remove from pans and let completely cool.
Step 7. To assemble cake: If the cake layers are uneven, they may be trimmed to make the tops flat. Spread the Orange Filling between the cake layers. Ice cake with the Boiled Frosting.
Step 8. If desired, garnish cake with thinly cut half slices of oranges which has been peeled. To make the slices, cut the peeled oranges cross-sectionally into thin slices using a sharp knife. Then cut each slice in half. Arrange around the edge of the cake. (I removed the orange garnish before storing left-over cake.)
Orange Filling
1 cup sugar
5 tablespoons cake flour
1 orange rind, grated
1/2 cup orange juice
3 tablespoons lemon juice
4 tablespoons water
1 egg, beaten
2 tablespoons butter
Step 1. Put the sugar and flour in a saucepan; stir to mix. Add orange rind, orange juice, lemon juice, water, and egg. Stir to combine. Add the butter.
Step 2. Heat, using medium heat, until the filling thickens (about 10 minutes), while stirring constantly.
Step 3. Remove from heat, and allow the filling to cool to room temperature.
Boiled Frosting
1 cup sugar
1/4 cup water
2 egg whites
1 teaspoon vanilla
Step 1. Combine the sugar and water in a saucepan, then heat using medium heat. Do not stir while cooking. If a bit of the sugar mixture coats the sides of the pan above the cooking syrup, gently use a dampened paper towel or brush to remove any sugar crystals. Bring to a boil, then reduce heat and simmer until the syrup reaches 235° F. (thread stage).
Step 2. In the meantime, put the egg whites in a mixing bowl and beat until stiff peaks form.
Step 3. Slowly pour the hot syrup over the beaten egg whites, while continuously beating. Beat until the mixture is glossy and shiny, and has a nice consistency for icing a cake (about 7 minutes).
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