Follow these steps to create a perfectly fluffy and delicious Angel Food Cake:

1. Preheat your oven to 350°F (175°C).
2. In a large bowl, beat egg whites with cream of tartar until soft peaks form. This step is crucial for creating the cake’s airy texture.
3. Gradually add sugar while continuing to beat until stiff peaks form. The sugar will stabilize the egg whites, allowing the cake to maintain its structure.
4. Gently fold in cake flour, salt, and vanilla extract until just combined. Be careful not to overmix, as this can deflate the egg whites.
5. Pour batter into an ungreased tube pan. The ungreased pan helps the batter cling to the sides as it rises, creating a tall and fluffy cake.
6. Bake for 30-35 minutes or until golden and the cake springs back when touched. Avoid opening the oven door too often, as this can cause the cake to collapse.
7. Invert the pan and let the cake cool completely before removing it. This step ensures the cake maintains its height and prevents it from collapsing.