Grandma Chiquinha’s Orange Cake-'Brazilian Recipe'

Grandma Chiquinha’s Orange Cake
Ingredients
4 eggs, separated
2 cups (500 mL) granulated sugar
2 cups (500 mL) all purpose flour
1 tbsp baking powder
2 cups (500 mL) orange juice (preferably fresh squeezed)
Method:
Preheat oven to 350° F (180° C). Grease and flour a 13 X 9-inch (3.5 L) metal cake pan.
In bowl and using an electric mixer, beat egg whites until stiff.
In a separate large bowl, beat egg yolks with sugar. In another bowl, sift together flour and baking powder; add to yolk mixture alternately with 1 cup (250 mL) orange juice, making three additions of dry and two of wet. Fold in egg whites. Pour into prepared cake pan.
Bake for 30 minutes or until toothpick inserted in centre comes out clean.
After removing cake from the oven, use a fork to pierce holes on top of the cake and pour remaining orange juice on top. Cool cake in pan on wire rack. Cut into squares to serve.