Preheat your oven to 350 degrees Fahrenheit.
Use a paper towel to rub a thin layer of crisco over the bottom and sides of a (SIZE) sheet pan. Cut a piece of parchment paper into the shape of the pan, and lay it down on the bottom. Crisco the parchment paper again and dust with a little sprinkling of flour. Alternatively, you can use nonstick spray.
In a large bowl, combine the egg yolks and ¾ cup of caster sugar. Beat with an electric mixer until the mixture becomes pale and thick, about 3 to 5 minutes. Beat in the vanilla and salt.
In the bowl of a stand mixer (if possible, or with a hand mixer if not) beat the egg whites until soft peaks form. Add the remaining 2 tablespoons of caster sugar. Beat again until stiff peaks form.
Fold your yolk mixture into the egg whites with a rubber spatula or wooden spoon. Take care to mix the ingredients, as you don’t want to stir the egg whites too roughly or they will deflate.
Once the eggs are mixed together, sift the cake flour over the eggs and fold gently to combine.
Put the batter into the prepared pan and place it in the oven.
Bake the cake for 15 to 20 minutes, until a toothpick comes out clean when stuck into the middle of the cake.