Potato Rosemary Sourdough
Mashed potato keeps this sourdough loaf moist with a tender, open crumb.
Dietary
Vegetarian, Pescatarian, Dairy free, Nut free, Halal, Kosher
Allergens
Wheat
This rustic loaf blends mashed potato and potato water into an active sourdough starter, producing a soft, long-keeping crumb beneath a crackling crust. Fresh rosemary folded through the dough adds a fragrant, savory note that pairs well with soups, roasted meats, or simple butter and salt.
Ingredients
- 1 cup active sourdough starter
- 1/2 cup mashed potato, cooled
- 1/2 cup potato cooking water, cooled to lukewarm
- 3/4 cup warm water
- 4 cups bread flour
- 2 tablespoons fresh rosemary, chopped
- 2 tablespoons olive oil
- 2 teaspoons salt
- 1 tablespoon honey
- 1 tablespoon cornmeal, for dusting
Method
-
In a large bowl, whisk together the sourdough starter, mashed potato, potato water, warm water, and honey until mostly smooth.
-
Add the bread flour, chopped rosemary, olive oil, and salt. Mix until a shaggy dough forms.
-
Turn the dough out onto a lightly floured surface and knead until smooth and elastic, about 8 minutes.
-
Place the dough in a lightly oiled bowl, cover, and let rise at room temperature until doubled.
-
Turn the dough out, deflate gently, and shape into a round or oval loaf. Place on a parchment-lined baking sheet dusted with cornmeal.
-
Cover loosely and let rise again until puffy and nearly doubled.
-
Preheat the oven to 425°F. Score the top of the loaf with a sharp blade in a crosshatch or single slash pattern.
-
Bake until the crust is deep golden brown and the loaf sounds hollow when tapped, 35 to 40 minutes.
-
Transfer the loaf to a wire rack and let cool completely before slicing, at least 1 hour.
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Potato Rosemary Sourdough
This rustic loaf blends mashed potato and potato water into an active sourdough starter, producing a soft, long-keeping crumb beneath a crackling crust. Fresh rosemary folded through the dough adds a fragrant, savory note that pairs well with soups, roasted meats, or simple butter and salt.
18 hr 30 min 14 slices 178 cal
Ingredients
- 1 cup active sourdough starter
- 1/2 cup mashed potato, cooled
- 1/2 cup potato cooking water, cooled to lukewarm
- 3/4 cup warm water
- 4 cups bread flour
- 2 tablespoons fresh rosemary, chopped
- 2 tablespoons olive oil
- 2 teaspoons salt
- 1 tablespoon honey
- 1 tablespoon cornmeal, for dusting

Method
- 1
In a large bowl, whisk together the sourdough starter, mashed potato, potato water, warm water, and honey until mostly smooth.
- 2
Add the bread flour, chopped rosemary, olive oil, and salt. Mix until a shaggy dough forms.
- 3
Turn the dough out onto a lightly floured surface and knead until smooth and elastic, about 8 minutes.
- 4
Place the dough in a lightly oiled bowl, cover, and let rise at room temperature until doubled.
- 5
Turn the dough out, deflate gently, and shape into a round or oval loaf. Place on a parchment-lined baking sheet dusted with cornmeal.
- 6
Cover loosely and let rise again until puffy and nearly doubled.
- 7
Preheat the oven to 425°F. Score the top of the loaf with a sharp blade in a crosshatch or single slash pattern.
- 8
Bake until the crust is deep golden brown and the loaf sounds hollow when tapped, 35 to 40 minutes.
- 9
Transfer the loaf to a wire rack and let cool completely before slicing, at least 1 hour.