In a bowl, dissolve the sugar and yeast in warm water. Let it sit until it becomes frothy, about 10 minutes.
In a large mixing bowl, combine the flour and salt. Add the yeast mixture and 50 ml of olive oil. Mix until a sticky dough forms.
Transfer the dough to a floured surface and knead for about 10 minutes until smooth and elastic.
Place the dough in an oiled bowl, cover it, and let it rise in a warm place for about 1 hour or until doubled in size.
Preheat your oven to 220°C (428°F).
Punch down the dough and place it on a well-oiled baking sheet. Stretch it out to fit the pan, then dimple the surface with your fingers.
Drizzle the remaining olive oil over the dough and sprinkle with coarse sea salt.
Bake in the preheated oven for 20-25 minutes until golden brown. Let it cool slightly before serving.