Preheat oven to 350 degrees F. Line bottom of an angel food pan with parchment paper but do not grease the pan. Trace the inside and outside edges of the angel food cake pan with a pencil, then cut out the circle to fit in the bottom of the pan.
Sift flour into a medium bowl twice, set aside.
Put egg whites and cream of tartar in the bowl of a standing mixer fitted with the wire whisk attachment. Beat until the mixture becomes white and fluffy.
Add sugar, vanilla extract, almond extract and salt and beat until soft peaks form.
Then, sift the flour one more time into the wet ingredients and stir gently to combine.
Pour the batter into the prepared angel food cake pan.
Bake in preheated oven for 35-40 minutes, or until the top is golden brown and the cake springs back when lightly touched.
Remove the cake from the oven and invert the cake pan, placing the open side of the pan down on a cooling rack.
Cool completely before removing from cake pan.
Video
Notes
Ingredient Substitutions
All-purpose flour. Cake flour is a good substitute for all-purpose flour.
Egg whites. Fresh, organic egg whites yield the best results. You can also buy liquid egg whites, just make sure they only have one ingredient: Egg whites. If they have stabilizers, emulsifiers or preservatives they might not be able to be whipped to stiff peaks.
Granulated sugar. superfine sugar can be used in place of granulated sugar.
Vanilla/almond extracts. I don't recommend making substitutions for these ingredients.
Store/FreezeStore leftover angel food cake in an airtight container at room temperature for up to 3 days, or in the freezer for up to 1 month.