3-4 hours before mixing the dough, feed your sourdough starter and place in a warm place.
In a large bowl, combine the warm water, olive oil, and honey.
Add the bread flour and mix until fully combined. Cover and let sit for the 3-4 hours, or until your sourdough starter peaks (this is the autolyse).
Once your starter is peaked, add 60g of it to the dough as well as the salt. Combine until fully mixed and you can no longer feel the salt grains in the dough. Cover and let sit for 30 minutes in a warm place.
Stretch and fold the dough. Cover for another 30 minutes and then stretch and fold it again.
Cover and let sit in a warm place for 4-6 hours, or until a couple of bubbles visibly form on top of the dough.
Use olive oil to oil an 8-inch cake pan or nonstick tin of the same size. On an oiled surface, fold the dough into a square shape (by folding in opposite sides, then the other ones) and place seam side down into the tin. This doesn't have to be perfect at all. Then lightly oil the top of the dough (you can use spray oil), cover with plastic wrap and set in the fridge overnight (10 hours).
In the morning, remove from the fridge and set in a warm place for 2 hours. Before the two hours is up, preheat your oven to 450F (make time for it to sit at that temperature for about 20 minutes).
Uncover the dough carefully and it should've expanded out more than before.
Before baking, dimple the dough with wet fingers, letting the tips of your fingers just touch the bottom of the tin without piercing through. (If you're adding toppings, add them now!) Pour the 20g of warm water on top of the dough, avoiding the very edges of the dough. Then lightly drizzle the top with olive oil. There will be a strange mixture of water and oil pooling over the dimples. Use your fingers to create a few more dimples if they rose back up. If you want big bubbles, don't pierce any of the bubbles. Sprinkle some flaky salt on top.
Set in the oven, turn the temperature down to 400F and bake for 37-40 minutes or until golden brown all through the dough top. Transfer to a cooling rack right after removing from the oven. Serve warm or at room temperature.