Makes 2 or 3 loaves

2 quarts water
1 sweet potato, peeled and diced
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cooked sweet potato

½ cup cooking liquid
2 cups whole wheat flour
2 teaspoons instant yeast
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4 cups whole wheat flour

2 tablespoons vital wheat gluten

2 cups cooking liquid

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¼ cup honey
¼ cup olive oil
3 teaspoons kosher
3 teaspoons instant yeast

Boil the sweet potato in the water for about 20 minutes, or until thoroughly cooked. After the sweet potato is cooked allow it to cool in the liquid to room temperature, refrigerating if necessary. Once cooled drain it, squeezing it with your hands or the back of a spoon, reserving the cooking liquid.

Place two bowls side-by-side; one will hold the pre-ferment, the other autolyse. In one bowl combine the cooked and drained sweet potato with ½ cup of the cooking liquid, 2 cups whole wheat flour, and 2 teaspoons instant yeast. Stir it just until combined then cover it with plastic wrap. In the other bowl combine 4 cups whole wheat flour, 3 tablespoons vital wheat gluten, and 2 cups cooking liquid; stir it just until combined then cover it with plastic wrap (take care not to get yeast into this bowl). Allow the bowls to rest at room temperature for about an hour, during which time the preferment will begin it’s job multiplying yeast and fermenting flour, and the autolyse will soak liquid, swelling the gluten.

After an hour or so, combine the ingredients from both bowls into the bowl of an upright mixer fitted with a dough hook. Add the honey, olive oil, salt, and 3 teaspoons of yeast (add the yeast and salt on opposite sides of the bowl). Knead the dough on medium speed for about 8 minutes. Place the dough in a lightly oiled container, cover it loosely, and allow to ferment for 1-2 hours, or until doubled in bulk. Deflate the dough and allow it to ferment an additional 30 minutes.

Turn the dough out onto a floured work surface and cut it into 2 or 3 pieces. Shape into loaves and place into lightly oiled pans. Loosely cover the loaves with plastic wrap and allow to ferment for 30-60 minutes, or until double in size and when gently touched with a fingertip an indentation remains.

Bake the breads for about 30-40 minutes, adding steam to the oven a few times (either with ice cubes or a spray bottle) and rotating the breads every ten minutes. The breads are done when they are dark brown and sound hollow when tapped upon. Remove the breads from their pans and allow them to cook on a wire rack for at least 10 minutes before slicing.