Beat eggs with sugar. Add yogurt, which are pre-quenched ammonia and bicarbonate of soda. Then add the oil, grated lemon rind and vanilla. And finally add the flour. After kneading the dough him rolling out the crust thickness that is your choice. Cut the shapes with greased cookie with egg yolk, sprinkle them with sugar and bake them until pinking in a preheated oven 175S. You can shape them and without them grindstone. I made them to swallow. I think I got pretty interesting.