II
The Method
1
Combine the flour, salt, and yeast in a large bowl. Add the water and olive oil. Mix until a rough, very wet dough forms — it will be too sticky to knead in the conventional sense. Work it in the bowl, folding it over itself repeatedly, until it holds together and begins to show some elasticity. The dough is ready when it pulls away from the sides of the bowl in a single mass and the surface shines.
2
Coat a deep baking tray (approximately 30 × 40 cm) generously with olive oil — the base must be slick and pooled, not merely greased. Turn the dough into the tray. Leave it uncovered for 30 minutes at room temperature; the gluten relaxes and the dough will begin to spread of its own accord. Then cover loosely and allow the first rise to complete for a further 30 minutes, until the dough is visibly puffed and aerated.
3
With oiled hands, stretch the dough to fill every corner of the tray. Work from the centre outward with flat palms; do not tear. Then dimple the entire surface aggressively — press all fingers straight down to the base of the pan and draw them back. The dimples must be deep, reaching the tray floor, and evenly distributed across the surface. Shallow dimples will collapse in the oven and the brine pools will be lost. This is where the dish lives or dies.
4
Mix the brine: combine the water, olive oil, and dissolved coarse salt and shake or whisk briefly to emulsify. Pour the brine evenly over the dimpled dough, ensuring every dimple receives liquid. The surface should appear flooded, with visible pools of golden oil sitting in each depression. Leave to rise a second time for 30 minutes; the dough will puff around the filled dimples.
5
Heat the oven to 220 °C with a shelf on the lowest rack or on the oven floor. Slide the tray onto the lowest position. For the first 5 minutes the trapped moisture under the dough creates steam, softening the crumb interior. Continue baking for a further 15–20 minutes. The focaccia is done when the base is deeply golden and rigid — lift one corner with a palette knife; it should resist and sound hollow when tapped.
6
Remove from the oven and slide immediately onto a wire rack. Do not leave it in the tray, where residual heat and trapped steam will soften the base crust. The surface should show irregular amber-to-gold puddles where the brine has reduced to an oily, salty glaze in each dimple. Serve within two hours; the open crumb tightens as it cools and the characteristic texture is lost.