1. Baking grease with butter and put in the cold. In a blender or processor chop butter, sieved through the flour and ground to a fine crumb.
2. If the combine is not, you can simply rub your hands with cold butter with the flour until fine crumbs. Cheese rub on a fine grater and mix with remaining batter.
3. Add the egg yolks, mix well, wrap in plastic wrap and send in the refrigerator for 20 minutes. Then pull out the dough and rolled it into a thin layer. Cut biscuits with special forms or merely cut into triangles with a knife and passed on to a baking sheet. Brush egg white special grease cookies and sprinkle with sesame seeds and fried onions. We send in a preheated 180 degree oven for 15 minutes until browning.