Holiday Sourdough Know-How Culinary Class Bring warmth and tradition to your holiday season with the art of sourdough baking. In this festive hands-on class, you’ll learn to create and maintain a healthy starter without waste, giving you the confidence to bake sourdough all year long. Together we’ll make a rustic sourdough boule—perfect for your holiday table—and spiced gingerbread sourdough muffins to enjoy with a cozy hot drink, a delicious way to share homemade goodness with family and friends during the holidays.