To begin this bread, you need to set aside about 1 hour at least to take the time to knead and let the dough rest. The rest of the time will be more passive time.
This recipe only has a small amount of active effort. You need to let the dough sit and take its time. You also need to plan time for this bread. It needs at least 12 hours in the fridge and at the least 3 on the counter.
What I like to do is to start this dough in the afternoon around 1. I can get all the kneading in by 1:30 and then it needs some rest time. After that it will be sitting in the fridge overnight.
Take your sourdough start, water and flour and put them in a large mixing bowl. Use a wooden spoon or dough spoon to mix the ingredients together.
It will begin to be too sticky and dense to manage with a spoon. Let this sit for one hour. This is the autolyse stage. Once the hour has passed you will add the salt and let it sit another 30 minutes.
Now you will do your first stretch and fold or coil fold. There are two different options. You can stretch and fold which means you pull the dough up from one corner and stretch it and then fold it over the top fo the dough, rotate and do the same action 4 times for the dough.Coil fold is where you lift the dough from underneath with two hands, pulling the dough up and then folding it down in half on itself as you let it back down. I You then rotate the bowl and repeat this 3 more times rotating the bowl each time.` Let the dough rest another 30 minutes and repeat the coil fold or stretch and fold. (having wet hands makes this so much easier)
Repeat this 3 -4 more times. You can do it up to 6 times.
Once you are at this point you will notice the dough has a very different texture and should be very jiggly.
Once it had doubled in size, its time to shape your dough and prepare it for the fridge! This will make one large loaf or two smaller loaves.
You are now going to add your inclusions (lemon and blueberres). In a small bowl add the lemon zest, sugar and flour. Stir until it is all combined. I like to mix with my hand and crush the zest into the sugar. This will help infuse the sugar with the lemon. The flour will help to prevent from the sugar mixture from melting out of the bread. It will help it stay in the bread.
Spread your dough into a large triangle. Make sure not to make it too thin, as you dont want to rip the dough. Sprinkle your blueberries evenly on the dough, about 2/3 of them. Now add 2/3 of your lemon sugar mixture. Sprinkle it evenly. Fold the dough into thirds. On the first third, add more blueberries and lemon mixture.Now fold the other third over the blueberries etc. Carefully roll up the dough. Carefully begin turning the dough as you pull it towards you. You cant to form a ball. This will give the surface of the dough the tension it needs. Do this carefully so you dont rip through the first layer of dough. This can happen often with inclusions. Place your shaped dough into a banneton or bowl with a floured towel or paper towel inside. You can use a regular large mixing bowl, but it is recommended to use a bread banneton basket. Take the dough and lift it up, flip it over and put the finished side of the dough down into the bowl. Cover with plastic wrap and use a rubber band to secure the plastic wrap around the bowl. Put the bowl in the fridge and let it sit in there for at least 12 hours. You can go as far as 24 hours.
When you are ready, take the bowl out of the fridge and let the dough sit on the counter for about an hour. I like to let the oven preheat to 450 degrees while this is happening. Put your dutch oven in the oven to preheat with the oven. You want your pan to be hot.
Lay out some parchment paper, and take the dough gently out of the bowl and flip it over so the smooth side of the dough is on top. Lay it on the parchment paper
Cut some slits or designs in the dough to allow for more of a rise. I like to make a swirl. You can use a scoring lame or a sharp knife. Immediately take your hot dutch oven out of the oven and take hold of the parchment paper with the dough. Put it inside the dutch oven and carefully place the lid on and put it in the oven to bake.
If you want, you can add a couple ice cubes on the outside of the parchment paper between the pan and the paper. This will give the crust a bubbly surface and allow more of a rise!
Bake the dough for 35 minutes. Check around 30 minutes and see if it is done. Tap it, it should feel hollow. You can take the top off of the pan and let it bake if the top is not golden brown. Cook with the top off for another 15-20 minutes.
Take it out of the oven when it is done and let it cool completely on a wire rack before cutting.
Slice and eat as is, add butter or even add a sweet compound butter like a cinnamon honey butter.
Store in a bread bag.