Preheat oven to 350 F.
Spray a 13x9-inch baking dish with Baker's Release spray (or grease and flour).
In the mixing bowl of an electric mixer fitted with a paddle attachment, cream butter and granulated sugar until smooth.
Add 4 egg yolks plus the extracts and 10 ounces of coconut milk and mix briefly.
In a separate bowl, stir together cake flour, baking powder, baking soda and salt.
With mixer running, add flour mixture gradually.
In a separate mixing bowl on the electric mixer fitted with a wire whip, beat egg whites at high speed until stiff.
Fold egg whites gently into cake batter.
Using spatula place cake batter into prepared cake pan.
Bake the cake in the preheated oven for 40-45 minutes or until a toothpick can be inserted and removed without wet batter (moist crumbs are fine).
Allow cake to cool completely in the pan.