Sourdough adds distinct flavor and chewiness to these light, moist and buttery rolls.
½ cup sourdough starter
1 cup lukewarm water
2½ cups unbleached all-purpose flour
1½ teaspoons salt
2 tablespoons sugar
6 tablespoons unsalted butter, at room temperature
¼ cup nonfat dry milk
¼ cup potato flour
1 ½ teaspoons instant yeast
1. Combine all of the ingredients in a large bowl, then mix and knead—by hand, mixer, or bread machine set on the dough cycle—adding more flour or water if necessary to make a soft, smooth dough. Place the dough into a lightly greased bowl, cover, and allow it to rise at warm room temperature until it’s nearly doubled in bulk, 1 to 1½ hours.
2. While the dough is rising, lightly grease two 8″ round cake pans. Transfer the dough to a lightly greased work surface, gently deflate it, and divide it into 16 pieces. Shape each piece of dough into a ball. Place eight balls in each of the round pans; if you space the balls evenly, they shouldn’t touch one another.
3. Cover the pans and allow the rolls to rise until they touch one another and are very puffy, about 1 to 1½ hours.
4. While the rolls are rising, preheat the oven to 350°. Bake the rolls for 24 to 26 minutes, until they’re a light golden brown on top; a digital thermometer inserted into one of the center rolls should read 190°F. Remove the rolls from the oven and, after 2 or 3 minutes, carefully transfer them to a rack to cool.