Although this formula is exactly the same as the preceeding pain à l’ancienne rustic bread recipe (page 52), the method is quite different. This focaccia dough is also quite similar to the pizza doughs in this book, the main difference being the amount of hydration. Focaccia is wetter, at 80 percent hydration, because it has the benefit of rising and baking in a pan to provide structural support, whereas pizza dough is closer to 70 percent hydration so that it can be handled and stretched. In both cases, the dough should be slightly sticky, not just tacky. Focaccia dough is so wet that it’s best to use olive oil to handle it, whereas flour works just fine with pizza dough. You can also bake a smaller, round focaccia (pictured on page 198).
One possible topping for focaccia is herb oil (page 70); you can add it during the final dimpling.