What biscuits are made by whisking method?

Sponge cake biscuits are made by whisking method. Sponge cake is a light and airy cake made with whipped egg whites and yolks, sugar, and flour. The egg whites are whisked until stiff peaks form, and then the sugar is gradually added and whisked until the mixture is thick and glossy. The egg yolks are then added, followed by the flour, which is sifted in gently to prevent the mixture from deflating. The batter is then poured into a greased and lined cake tin and baked in a moderate oven until golden brown and springy to the touch.