Preparation time: 10 minutes
Waiting time: 30 minutes
Cooking time: 15 minutes

1. Form the flour into a well; in the center add the cornstarch, butter, sugar, milk, yeast, a few drops of vanilla and the baking soda; 
2. knead into a dough and roll out into cylinders; roll in granulated sugar and let rest for 30 minutes in a cooling place; 
3. slice and place on a buttered floured baking sheet; 
4. bake in a preheated 160° C / 325° F) oven for about 15 minutes.