Eggs and sugar is broken down very well until the mixture is doubled 2-3 times and sugar completely melted. Then added gradually orangeade, the oil and the flour without stopping the mixer, but at the lowest level. Pour dough into greased and floured cake pan. Bake in preheated oven. After the bake was transferred to a tray and using a pen to make holes in the cake, which start at the top and reach the bottom. In them, after the cake cool a bit, pour the syrup, which is made in a small saucepan at low heat put the butter, water, sugar and cocoa and stir until it is homogeneous and slightly thicker mixture. Spoon pouring in every hole. Cake sprinkled with powdered sugar.