Place sugar, cocoa, water in a saucepan and bring to boil. Add butter and mix till dissolved.

After completely cools add yolks one at a time.

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Set aside 1/2 cup.

 

Whip the egg white to stiff peeks, adding the rest of the sugar.

Add flour, baking powder,

Bake in 350F, for about 40 minutes. Test for doneness.

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Spread the half cup cake mixure that you set aside immediately.