This particular holiday season, which is keeping us inside more than ever, seems ideal to look at the bright side of things, and why not play in the kitchen trying the sourdough bread recipe. Sourdough Bread Recipe - 1/4c active sourdough starter (King Arthur Flour recipe) - approx. 1 and 1/3c. warm water - approx 4c unbleached flour - 1 and 1/2 tsp salt Mix the ingredients in a stand mixer with the dough hook until a stiff dough forms. Knead by hand 2 minutes more.