Focaccia Sandwich

In a large bowl, mix the white flour, salt, and sugar. Stir the dry yeast into the lukewarm water and let it sit for five minutes.

Pour the mixture into the flour, add a tablespoon of olive oil, and mix until you get a thin and very sticky dough. Carefully wrap the bowl with cling film and place it in the refrigerator for 24 hours. During this time, the dough should double or triple in volume and be airy.

Prepare a baking tray approximately 40x30 cm in size and grease it with 2 tablespoons of oil. Transfer the risen dough onto the baking tray and spread it evenly with your fingers to the edges. Wrap again with cling film and let it rise for another 2-3 hours at room temperature.