Egg whites are broken down into hard snow. Add sugar, stirring as not to stop. Add flour and, stirring gently with a wooden paddle or silicone, so the addition of chips. Paper or foil, using a spoon is placed on the mixture - may be optional shape and baked at 150 C for about 15-20 minutes. Get out of paper or fthe oil, when cool. Chocolate melts and it flooded cookies. The color of chocolate is of your choice, or you can use different types and biscuits to mottle.