chocolate sponge

I am putting two sponge cakes in the oven right now.

8 eggs

1 cup of sugar

1/3 cup cocoa

2/3 flour
vanila

1. Using a Kitchen Aid, beat the eggs at full speed until really foamy
2. Reduce speed and add sugar and return to full speed... the mixture will deflate and go right back up after a few minutes
3. Reduce speed and add flour slowly
4. Add vanilla
5. Place in a buttered and floured pan.
6. Bake at 375F for about 42 minutes or until done