01 - Dissolve the yeast and sugar in lukewarm water in a small bowl. Let stand for 10 minutes until the mixture becomes frothy and bubbly.
02 - Combine the flour and salt in a large mixing bowl. Create a well in the center and pour in the activated yeast mixture along with the olive oil.
03 - Mix until a sticky dough forms, then turn out onto a lightly floured surface. Knead for 8 to 10 minutes until the dough is smooth, supple, and springs back when pressed.
04 - Transfer the dough to an oiled bowl, cover with a damp kitchen towel, and let rise in a warm spot for 1 hour or until doubled in volume.
05 - Preheat the oven to 425°F. Grease a 12×16 inch baking tray generously with olive oil.
06 - Punch down the risen dough and place it on the prepared tray. Stretch and press it to fill the tray, using your fingertips to create characteristic dimples across the surface.
07 - Brush the dough generously with olive oil. Scatter chopped rosemary and flaky sea salt evenly over the surface, and press olives or halved cherry tomatoes into the dimples if desired.
08 - Allow the shaped dough to rise for 20 to 30 minutes until visibly puffy and pillowy.
09 - Bake on the center rack for 20 to 25 minutes until the top is deep golden brown and the bottom sounds hollow when tapped. Cool slightly before slicing and serving.