Sourdough English Muffins

Ingredients

• tablespoons granulated sugar
• water warm
• tablespoon active dry yeast or instant yeast
• sourdough starter ripe or discard; ripe will give you a more vigorous rise
• King Arthur Unbleached All-Purpose Flour
• King Arthur Baker's Special Dry Milk or nonfat dry milk
• tablespoons butter at room temperature
• tablespoon table salt
• teaspoon citric acid optional; for enhanced sour flavor
• King Arthur Semolina Flour or yellow cornmeal for coating