In a large mixing bowl, pour in the warm water and sprinkle the sugar and instant yeast on top. Allow this mixture to sit undisturbed for about 5 minutes or until it becomes frothy, indicating that the yeast is active.
Add the all-purpose flour and salt to the yeast mixture. Stir with a wooden spoon until a sticky dough forms.
Drizzle 2 tablespoons of olive oil over the dough. Use your hands to knead the dough inside the bowl for about 5 minutes, until it is smooth and elastic.
Cover the bowl with a damp cloth and place it in a warm area. Allow the dough to rise for approximately 1 hour, or until it doubles in size.
After the dough has risen, gently punch it down to deflate. On a large baking sheet (approximately 12x18 inches), pour the remaining 2 tablespoons of olive oil and spread it evenly across the surface.
Transfer the dough to the prepared baking sheet, stretching it gently to fit the size of the sheet. Next, use your fingertips to create dimples all over the surface of the dough, giving it that classic focaccia texture.
In a small bowl, combine the remaining 2 tablespoons of olive oil with the minced garlic, chopped rosemary, and thyme. Brush this fragrant mixture generously over the surface of the dough, ensuring even coverage.
Season the top of the dough with coarse sea salt and freshly cracked black pepper to taste.
Allow the dough to rest for another 20-30 minutes while you preheat your oven to 425°F (220°C).
Once your oven is preheated, place the focaccia in the oven and bake for 20-25 minutes or until it is golden brown and has a delightful aroma.
After baking, remove the focaccia from the oven and let it cool slightly on the baking sheet before slicing it into generous pieces.
Notes
Serve warm with olive oil and balsamic vinegar for dipping.