Ingredients
Equipment
Method
Step 1: Prep and Sift
Begin by preheating your oven to 325°F (163°C). Take your 10-inch tube pan and ensure it is meticulously clean and absolutely dry. Do not grease it under any circumstances! Next, sift your cake flour and half of your super-fine sugar (¾ cup) together in a bowl. Sift this mixture three to four times. This repeated sifting aerates the flour, making it light enough to fold into the delicate meringue without instantly deflating it.Step 2: Whip the Egg Whites
In the pristine, grease-free bowl of your stand mixer fitted with the whisk attachment, add the room-temperature egg whites, salt, and cream of tartar. Beat on medium-low speed until the mixture becomes frothy and opaque. Increase the speed to medium-high and begin adding the remaining ¾ cup of sugar, one tablespoon at a time. Take your time here. Continue to whip until "soft peaks" form. The peaks should gently flop over when you lift the whisk. Do not whip to stiff, rigid peaks, or your cake will be dry and difficult to fold. Beat in the vanilla and almond extracts during the last few seconds.Step 3: Fold the Flour
Remove the bowl from the mixer. Sprinkle about one-quarter of the sifted flour/sugar mixture over the whipped egg whites. Using your large rubber spatula, gently fold the mixture together. Cut down the center of the bowl, scrape along the bottom, and lift the batter up and over. Rotate the bowl slightly with each fold. Repeat this process until all the flour is incorporated. Stop folding the exact moment no more white flour streaks remain; over-mixing is the enemy of a fluffy cake.Step 4: Bake
Gently spoon the delicate batter into your ungreased tube pan. Run a butter knife or an offset spatula through the batter in a circular motion to release any large, trapped air bubbles. Smooth the top gently. Bake on the lowest rack of your oven for 40 to 45 minutes. The cake is done when it is a deep golden brown, springs back quickly when lightly touched, and deep cracks appear on the surface.Step 5: Cool Upside Down
This is the most critical step. The moment you remove the cake from the oven, immediately invert the tube pan. Most traditional tube pans have little "feet" or prongs to rest on. If yours does not, invert the center tube over the neck of a heavy glass bottle (like a wine bottle). Let the cake cool completely upside down for at least 2 hours. Gravity will stretch the crumb as it cools, setting the structure so it doesn't collapse into a dense disk. Once completely cool, run a thin knife around the edges to release it.
