1. Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius).
2. Add the whole egg to the yolks.
3. In a stand mixer, beat the egg whites, gradually adding sugar, until soft peaks form.
4. In a small bowl, beat the whole egg and yolks with lemon juice. Slowly fold the yolks into the whites.
5. Sift potato starch into batter, one third at a time, folding gently after each addition. Gently fold in add-ins, if using.
6. Pour batter into an ungreased tube pan and bake for one hour and 10 minutes. Invert cake to cool.
7. If desired, make the glaze: Mix ingredients together, starting with one and a half cups confectioner’s sugar. Add more until you reach desired thickness. You don’t want it too runny. Spread over the cooled cake.
Tips:
– Beat egg whites only until soft peaks. Soft peaks will continue to grow while baking, while stiff peaks are more likely to collapse.
– Use egg whites at room temperature, as they’ll beat up more nicely.
– Do not grease the tube pan and be sure to invert to cool.
– Fold gently! The goal is to retain as much of the whipped volume as possible. If you dump all the ingredients on top of the beaten whites, they will deflate.
Hi there – I don’t have a sponge cake pan and when I saw the picture to this recipe I thought great. The picture is of a cake baked in a loaf pan – as far as I can see. However, the recipe needs a sponge cake pan and I’m extremely disappointed.
Do you possibly have a sponge cake recipe that “goes” with the picture.
Looking forward to hearing from you.
B Geffen
It says at the send of the recipe a note that it can be baked in3 loaf pans