|Eggs||3 , separated|
|Cake flour||2⁄3 Cup (10.67 tbs) (Measured After Sifted)|
|Sugar||1⁄2 Cup (8 tbs)|
|Cream of tartar||1 Pinch|
|Butter||1⁄4 Cup (4 tbs), melted|
Preheat the oven to 350Â° F.
Grease well and lightly flour the bottom and sides of a 9 inch round cake pan.
Beat the egg yolks with an electric mixer for 1 minute.
Gradually add the sugar and beat for 4 minutes.
Add the vanilla.
Beat the egg whites until foamy.
Add the pinch of cream of tartar and beat until stiff peaks form.
Lightly and delicately fold 1/4 of the whites into the yolks mixture.
Then fold in 1/3 of the flour, 1/4 of the whites, 1/3 of the flour, 1/4 of the whites, 1/3 of the flour, and the remaining 1/4 of the whites.
Add the butter, folding just enough to mix well.
Pour into the prepared pan.
Bake at 350Â° F for 20 minutes or until done.
Do not overbake.
Cool in the pan for 10 minutes before turning out onto a rack.