Beat the eggs, sugar and the oil. Put the flour and baking powder in them sift, then adds them to me the other mixture. And add the walnuts and raisins. The resulting mixture separates me two and one half put cocoa. Put the two mixtures, one after the other in a form and with a spoon make circles light to spill colors. Bake in cake pan or tray may in mono muffins, a preheated oven at 180C for 30-40 minutes.