First separate the whites from the yolks. In a separate bowl, mix the egg yolks with half the sugar + melted butter + salt. Flour mixed with baking powder and add to egg-oil mixture. Mix well. The mass is very thick, but don't worry, whites will do the trick. Separately, beat egg whites with rest of sugar in a cool foam. And gently combine with our dough, gently knead until smooth. The dough will be like on pancakes. Ready divide the dough in half, in one part add cocoa powder and knead well.

From a bucket to take out the paddle for the dough. A bucket of oil (any). ... And begin to take turns to pour the batter as follows: in the middle of the form put 1 tablespoon light test, then STRICTLY in the center of this dough spread 1 tbsp dark dough. And so alternating portions until the dough will not end. We put on the program "cupcake" (I have 1H.10min.) or "baking". And bake.

After take out, allow to cool and cut.