In a large mixing bowl, combine the Italian "00" flour and kosher salt. In a separate small bowl, dissolve the active dry yeast and granulated sugar in the room temperature water. Let it sit for about 5 minutes until it becomes frothy. Gradually pour the yeast mixture into the flour while mixing with a wooden spoon until a shaggy dough forms.
Transfer the dough onto a lightly floured surface. Knead the dough for about 8-10 minutes until it becomes smooth and elastic. If the dough is too sticky, sprinkle a little more flour as you knead.
Shape the dough into a ball and place it in a lightly greased bowl. Cover it with a clean kitchen towel or plastic wrap and let it rise in a warm spot for about 1-2 hours, or until it doubles in size.
While the dough is rising, prepare the pizza sauce. In a medium saucepan, heat 2 tablespoons of olive oil over medium heat. Add the minced garlic and sauté until fragrant, about 1 minute. Stir in the crushed tomatoes and season with salt and pepper to taste. Simmer for about 10-15 minutes, then remove from heat.
As the dough finishes rising, preheat your oven to its highest setting, usually around 500°F (260°C). If using a pizza stone, place it in the oven to heat up as well.
Once the dough has risen, punch it down to release the air. Divide the dough into 2-4 equal pieces, depending on how large you want your pizzas. On a floured surface, gently stretch each piece into a round shape about 10-12 inches in diameter. Avoid using a rolling pin to maintain the air bubbles in the crust.
Transfer the shaped dough onto a floured pizza peel or baking sheet. Spread a generous amount of the prepared tomato sauce over the base, leaving a small border around the edges. Arrange the sliced fresh mozzarella evenly on top and finish with torn basil leaves.
Carefully slide the pizza onto the preheated pizza stone or place the baking sheet in the oven. Bake for about 8-10 minutes, or until the crust is golden and the cheese is bubbling and slightly charred.
Once baked, remove the pizza from the oven and let it cool for a minute before slicing. Serve hot, garnished with additional fresh basil if desired.