Beat eggs, add sugar, salt, yogurt, which has previously placed soda and left of effervescent in a few minutes, the lard and vanilla. Finally add the flour as to obtain a dough that is rolled out to a thickness of about 2 cm. Dough sheet is coated with water and sprinkle with sugar and it cut shapes, which rank in greased pan. Bake in a moderate oven and when they are ready to put on a plate or tray littered with napkins.