Preheat oven to 350 degrees.
Place egg whites in a large bowl; let stand at room temperature for 30 minutes. Sift together confectioners sugar and "prepared" all-flour twice. Set aside
Add the cream of tartar, extracts and salt to egg whites. Beat with an electric mixer on high until soft peaks form.
Add granulated sugar 2 tablespoons at a time. Beat with an electric mixer on high until stiff glossy peaks form and sugar is dissolved.
Next, use a spatula to fold in confectioners sugar-flour mixture 1/2 cup at a time.
Gently spoon into an ungreased tube pan (12-cup).
Cut through the batter with a knife to remove air pockets.
Bake in preheated oven for 35-40 minutes or until edges are brown and entire top is golden brown and appears dry.
Remove from oven and immediately invert pan on a heatproof plate. Cool completely "upside down" for about 1 hour.
After cooling, flip the pan over and sit on counter. Cooled cake should remain "stuck" in the pan.
Use fingertips or a rubber spatula to gently pull edges of cake away from edges of pan and center tube. Avoid using a knife because it will scratch the pan's coating.
Place heatproof plate on top of pan. Flip over. Tap bottom of pan and gently shake to release cake.
Slice and serve warm or cold. Garnish with sweetened whipped cream and mixed fresh berries (optional).