Sift magazine's holiday issue presents dozens of inspirations for this festive season's baking. Our Bread Board feature explores a number of sweet holiday bread recipes from different countries and traditions. They're small, just right for individual treats or sharing with a friend over coffee, and beautifully delicious. We hope they'll become a cherished part of your family's holiday feasts. Black Buns Like most bakers at holiday time, I reached back to my ancestors for a special bread…