Crumb
I modified the recipe from Peter Reinhart's Transitional Multigrain Hearth Bread from Whole Grain Breads
(it is now about 71% water instead of 61% and uses sourdough instead of commercial yeast):
Day 1: Soaker and Starter
Soaker
170g water
56.5g red whole wheat flour
56.5g rolled oats (I used steel cut by accident)
56.5g semolina flour (I didn't have any cornmeal around)
42.5g white whole wheat flour
7g flax seeds, whole or ground (I used toasted whole flax seeds)
7g wheat or oat bran
4 salt
Mix soaker ingredients together in a bowl for about 1 minute. It will form a dough that resembles thick porrage.
Cover loosely with plastic wrap at room temperature for 12-24 hours.
Starter
200g mature starter (unbleached flour)
100g unbleached bread flour
128g water
28g whole wheat flour
Blend ingredients together until fully hydrated.
Cover tightly with plastic wrap and place in the refrigerator for 12-24 hours.
Day 2:
Final Dough
456g starter (all of it)
400g soaker (all of it)
100g whole wheat flour
5g salt
20g sunflour seeds
20g pumpkin seeds
20g sesame seeds
You may need a little bit of extra whole wheat flour for adjustments
Two hours before making the dough
Take the starter out of the refrigerator
Toast the sunflower, pumpkin, and sesame seeds. Let them cool.
For the final dough
Mix together the starter and soaker until fully combined. Warning: this was an oddly challenging process, but it does work. I used a danish dough whisk. The dough will be very wet and sticky.
Add in the whole wheat flour a little bit at a time and mix it into the dough.
Let the dough rest for 5 minutes.
Mix in the salt and the seeds. Make sure the dough fully absorbs the salt.
Using wet hands (the dough is very sticky) need the dough for two to three minutes.
Use the Peter Reinhart stretch-and-fold technique, but do two stretch and folds in a row every ten minutes for 40 minutes. This dough is very troublesome. Note that it will probably not come completely together until the second stretch and fold and it should become significantly silkier by the fourth stretch and fold. [1]
Let the dough rise between 78-82 degrees for four hours. Do a stretch-and-fold after the first, second, and third hours of the rise.
After four hours, turn the dough out onto a floured surface and fold it in half so both sides are lightly floured.
Then gently stretch it into a rectangle. Fold it up 2/3 of the way, and then fold the left side over 2/3 of the way. Fold the right side directly over the left side and pull the top down over the bottom to develop surface tension. Turn the dough seam side down and let rest under a large overturned bowl.
Let the dough bench rest for 20 minutes.
If the gluten structure seems weak, repeat this process again. If the dough spreads out with fairly even thickness, proceed to the final shaping.
Shape the dough any way you like for the final shaping. I decided to make a large batard. My shaping skills are pretty terrible, so I would suggest looking at some videos (e.g. Bread Cetera) for shaping suggestions. Place in a banneton or in a bowl or pan lined with a floured dishcloth.
Let the dough sit out at room temperature for 1 hour under plastic wrap or similar
Then, place the dough in the refrigerator for 8-16 hours.
Day 3:
Preheat the oven to 500 degrees with a combo cooker or brothpot and stone.
Take the bread out of the refrigerator 20 minutes before you are ready to bake.
When you are ready to bake, turn the bread onto a floured peel and score it.
Put the oven down to 450 degrees F and bake under steam for 20-25 minutes.
Remove the lid for keeping the steam in and bake for another 20-30 minutes until the outside of the bread is a rich brown and the internal temperature reads 212 degrees F.
Wait at least 1 hour before slicing.
Crust