In a large bowl, whisk flour, sugar, salt, anise seed & cinnamon. Make a well in the center of the flour & add eggs, yolk, cooled butter, orange zest & vanilla. Whisk to form a slurry, pulling in a little flour from the sides of the bowl. Pour the yeast mixture over the egg slurry; using a wooden spoon, mix until a shaggy dough that is difficult to mix forms.