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1
In separate bowls, mix together the ingredients for the Sourdough Pre-dough and the Poolish Pre-dough.
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2
Cover each bowl with plastic and let it at room temp for about 20 hours.
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3
After 20 hours the Sourdough Pre-dough should be a little frothy and bigger.
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4
The Poolish Pre-dough will be bubbly and bigger.
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5
In a large bowl, mix together the two pre-doughs and the rest of the ingredients (except for flaxseed and sunflower seeds) until it comes together into a sticky lumpy dough.
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6
Remove the dough onto a well-floured cutting board and knead with the palm of your hands: push the dough down with your hand, fold in over itself and push down again, rotating as you go.
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7
Knead for 15-17 minutes.
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8
The dough will become more elastic and smooth.
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9
If it sticks a lot to the surface or your hands while kneading, dust with a little more flour and scrape up the dough from the surface to incorporate back in.
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10
If mixing in flaxseed/sunflower seeds, gradually knead them into the dough after the 15 minutes of kneading.
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11
Form into a ball and return to the bowl.
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12
Cover with plastic and let rise for 2 hours at room temp (the the dough over itself after 1 hour and return to bowl).
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13
After 2 hours of rising, remove the dough, turn upside down and fold the sides up to form into a ball again (this helps make sure the exposed part of the dough's skin gets moistened again.
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14
Let sit for 20 minutes covered with wrap.
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15
Form the round dough into a long, cylindrical loaf.
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16
Place it fold-side down on parchment paper and let rise for another 30 minutes.
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17
Meanwhile preheat oven to 480F/250C.
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18
Place a shallow pan at the bottom rack which we'll use to create steam later.
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19
(prepare some boiling water for this too)
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20
When ready to bake, cut a 1 cm deep slit down the center of the bread.
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21
(I sprinkled the top of my bread with flaxseed, but I don't recommend this because it got too dark during baking).
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22
Place the loaf on the center rack on a baking sheet and pour boiling water into the pan below it.
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23
Bake for 10 minutes, then carefully remove the tray of steaming water.
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24
Turn oven down to 430F/220C and bake for 30-35 minutes until the crust is dark and crisp.
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25
Remove from oven and let cool on a rack for about 1 hour.
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26
Slice and enjoy with butter, cheese, or your favorite accompaniments with bread :)