2tablespoonsegg white for brushing the dough (optional)
Instructions
Put 1 ½ cups of the bread flour (210 grams), semolina flour, salt, sugar and instant yeast in a stand mixer bowl.
Warm the milk to about 130 degrees F. It needs to be warmer than usual since the yeast is mixed in with the flour, plus the discard may be cold. The goal is for the mixture to be warm enough to activate the yeast. 130 degree milk works and will not kill the yeast. Stir in the discard and very warm milk.
Attach dough hook, set mixer and stand begin kneading dough. After two minutes of kneading it should still be very soft, but it should clear the sides of the bowl and cling only to the hook and bottom of bowl. Remove the bowl from the stand and add the olive oil, then scrape dough into the center of the bowl and let the machine knead it for another 5 minutes. The dough should be soft but not sticky. Supple is a good word here. It should be bouncy and feel alive.
Spritz the sides of the bowl and the dough lightly with some olive oil cooking spray or olive oil, then cover with plastic wrap and let rise in a warm place until doubled in bulk - about 45 minutes.
Meanwhile, line a large baking sheet with parchment and sprinkle with some sesame seeds.
This is a good time to preheat the oven to 425F because the second rise is fairly short.
Without punching it down, turn the dough out onto the parchment letting some of the air naturally escape. Push the dough around in the sesame seeds as you shape it into an oblong about 12 inches long and 5 or 6 inches wide. Try to keep it tall by pulling little strands up and over (sideways stretch and folds). Taper the ends a little, then cover with greased plastic wrap for a short 25 minute rise.
Before you put it in the oven, brush the loaf with a little egg white and sprinkle with more sesame seeds. To make slits, hold a pair of scissors open about 2 inches wide over the dough and make two or three little snips about ½ inch deep.
Bake at 425 degrees F for the first 20 minutes. Reduce heat to 350 and continue baking for another 20 minutes or until lightly browned and sounds hollow when tapped. Internal temp should be about 205 or so. Remove from pan, and cool on a wire rack.