In a large bowl, first start by combining and measuring the water and active starter. When it is milky add in the bread flour to the bowl.
NOTE: You will either want to mix this by hand or with a Danish dough hook. I used a mixer with a dough hook the first time and it did not combine well and resulted in poor gluten structure.
Mix the dough to a shaggy dough stage and let autolyze(rest) covered with a tea towel for 45 minutes.
After the 45 minutes add the salt and knead by hand for 6 minutes.
This can be a sloppy process but just keep going you are helping to create the gluten structure and this is important so don’t skimp.
The dough will be very wet and sloppy don’t worry just try to incorporate the water into the flour as best as you can.
Once you have finished kneading the dough let sit for 30 minutes before beginning the coil folds.
Coil Fold for Focaccia:
Make sure to start with wet hands, this makes it easier to work with the wet, sticky dough.
With both hands take and lift the dough at the center and pull gently upward. DO NOT let the dough rip. This will inhibit the gluten formation.
Repeat this on all 4 sides and this is one complete coil fold.
NOTE: Sometimes I will do another round of coil folds before letting it rest. Mainly I try to stop when the dough seems to be tightening up.
You will do a total of 5 folds with 30 minutes in between each fold.
Note: it can be helpful to make a mark on paper every time you do a fold so you can keep track of which fold you are on.
Follow the last fold with a 30-minute rest before continuing on to the next step.
After the last rest take a glass 9”x13” pan, lined with parchment paper, and coat generously with olive oil about 1 tablespoon. Gently transfer dough (being mindful not to rip it) to the pan and cover with plastic wrap.
Place the dough in the fridge or for around 8-12 hours for an overnight rise and long ferment.