Tomato-Olive Focaccia
To achieve the texture we found in Bari, Italy, the dough must be wet — so wet, in fact, it verges on a thick yet pourable batter. Resist the temptation to add more flour. Shaping such a sticky, high-hydration dough by hand is impossible. Instead, the dough is gently poured and scraped into the oiled baking pan; gravity settles it into an even layer.
If you have trouble finding Castelvetrano olives, substitute any large, meaty green olive.