Do you really have to 'fold' egg foams? Can't you just mix them?
Angel food cake recipe
5 egg whites
1/2 teaspoon cream of tartar (or a squeeze of lemon juice)
3/4 cup (175g) granulated sugar
1/2 cup (60g) flour (cake flour, ideally)
salt
vanilla (or some other extract)
Bake this in a narrow pan one big loaf pan, or two smaller ones would be good. Line…
Source: Adam Ragusea (2022-07-17)