Sift the cake flour and ⅓ cup of sugar together 3 times.
In your electric stand mixer using the whisk attachment, whip egg whites, salt and cream of tarter on high speed until soft peaks form.
Turn the mixer down to medium speed and gradually add the 1 cup sugar and both extracts.
Turn back onto high speed and let it whip until the egg whites have stiff, glossy peaks.
Remove from electric mixer and using a whisk, gently whisk in the flour/sugar mixture until it is well incorporated. You do not want to be aggressive here, you can easily deflate the whipped egg whites: carefully swirl just until it looks like the powder is mixed in.
Preheat oven to 350 degrees
Line a 15x10-inch jelly roll pan or a cookie sheet with parchment paper. Do NOT grease the pan.
Carefully spread the batter evenly in the prepared pan, smoothing the top with a spatula.
Bake for 15-20 minutes or until the cake is light golden brown and springs back when touched lightly. Do not overbake, as you want the cake to remain moist and pliable.
While the cake bakes, lay a clean kitchen towel on a flat surface and dust it generously with powdered sugar.
Once baked, let it cool for 15 minutes, then invert cake onto the prepared towel. Peel off the parchment paper carefully.
Starting from a short end, roll the cake up in the towel, jelly-roll style. Let it cool completely in this rolled position, you can place in fridge for an hour or 2.