Whisk all-purpose flour, whole-wheat flour, sugar, cornmeal, cinnamon, cloves, coriander, mace, white pepper and salt in a large bowl. Add egg yolks, butter and vanilla. Blend the ingredients with your fingertips until the dough comes together. Shape the dough into a 7-by-1 1/2-inch log and wrap in plastic wrap. Refrigerate for 6 hours or up to 3 days.