Cake:
1. Preheat the oven to 350°F.
2. Combine 4½ egg whites, ¼c milk, and 2¼t vanilla.
3. In a mixing bowl, combine cake flour, 1½c Sugar, baking powder, and ¾t salt.
4. Add to the dry ingredients ¾c butter and ¾c milk. Slowly mix until moist.
5. Beat at medium speed for 1½ minutes to aerate batter.
6. Add ⅓ of the egg batter. Beat for 20 seconds. Repeat with remaining batter.
7. Pour into two greased and flowered pans.
8. Bake for 25-30 minutes. Then, cool on metal racks for ~10 minutes.
Filling:
1. Beat butter until smooth and creamy with a wooden spoon.
2. Puree frozen strawberries with 1 T sugar. Drain off liquid; make sure to retain a few tablespoons to use as coloring.
3. Pour strawberry puree into the butter and mix well.
4. In a small saucepan heat ¾ c sugar and ¼ c water until sugar dissolves and the mix bubbles. Remove from heat.
5. Beat 5 egg whites and cream of tartar until there are soft peaks.
6. Beat into the eggs ¼ c Sugar until stiff peaks.
7. Bring the syrup in the saucepan up to 248°. Transfer syrup to glass container to stop cooking.
8. Beat the syrup into the whites. Continue beating until cool.
9. Beat in 2 c butter at a medium speed.
10. At a slow speed, add orange juice
11. Refrigerate until used. Quickly beat directly before constructing cakeIcing:
1. Cream shortening until fluffy. Pour in confectioners sugar and blend well.
2. Add 2 t vanilla, ½ t salt, and whipping cream. Blend until moist.
3. Beat at high speed until fluffy.
4. Slowly beat in retained strawberry juice until icing is a pleasant shade of pink
Construction:
1. split the layers of the cake in half horizontally
2. spread one layer with a portion of the filling. Then, cement another layer on top.
3. repeat for all layers
4. chill the cake for 10 minutes
5. spread frosting over cake