First thing in the morning, feed your sourdough starter and leave it in a warm spot to at least double in volume.

In the bowl of a stand mixer, combine flour, water and active sourdough starter. Mix the dough in a stand mixer fitted with a dough hook attachment for a few minutes on low speed, until the flour is hydrated.

Cover the bowl with a damp tea towel and leave the dough to fermentolyse for an hour.

After an hour, scatter the salt and sugar on top of the dough. Drizzle the olive oil all over, and using your hands, squish the salt and oil into the dough.

Once incorporated, run your mixer on medium speed for 10-12 minutes, until you have a very smooth and elastic dough.

Scoop the dough into a lightly oiled bowl and cover it with a damp tea towel or cling film. Leave it in a warm spot for 30 minutes.

Over the next 3 hours, at 30-minute intervals, perform a set of coil folds.

After all 6 sets of coil folds are completed, cover the dough and let it finish its bulk fermentation undisturbed for 1.5-3 hours.

Place the dough in the refrigerator for 8-24 hours.

The next day, line a baking tray with parchment paper and brush it with olive oil.

Take the dough out of the fridge and carefully transfer it into the prepared baking tray, stretching it out into the corners.

Cover it again and leave it in a warm spot to proof for another 1-2 hours.

In the meantime, place the cubed apples, sugar, cinnamon and a squeeze of lemon in a medium saucepan. Cook for 5 minutes, stirring often.

Set the apples aside to cool down.

Preheat the oven to 200°C (400°F).

Gently spread the cinnamon apple mixture across the surface of your sourdough focaccia.

Oil your fingers and dimple the top of the dough all over, pressing the apples into the dough.

Bake the sourdough apple focaccia for 20-25 minutes. Cool it for at least 15 minutes before taking it out of the baking tin.

Prepare the icing by mixing melted butter, icing sugar, vanilla paste, a pinch of salt and milk together.

Drizzle your sourdough focaccia with the icing and tuck in!