Preheat oven to 350°F (175°C). Ensure your tube pan is ungreased
Whip egg whites with cream of tartar and salt until soft peaks form
Gradually add ¾ cup sugar and beat to stiff glossy peaks
Sift cake flour with remaining sugar three times
Gently fold dry ingredients into the egg whites in batches
Pour batter into the pan. Smooth the top and bake for 35–40 minutes
Invert pan immediately and cool completely before removing
Toss strawberries with 2 tbsp sugar and let sit 20–30 minutes
Slice the cooled cake into layers or chunks as desired
Top or layer cake with strawberries and whipped cream. Serve immediately
