In a large mixing bowl, combine the warm water, sugar, and instant yeast. Stir gently and let it sit for about 5 minutes until it becomes frothy.

Add the salt and olive oil (if using) to the yeast mixture. Gradually add the flour, one cup at a time, mixing with a wooden spoon or spatula until a dough begins to form.

Transfer the dough to a floured surface and knead for about 8-10 minutes until it becomes smooth and elastic.

Place the kneaded dough into a lightly greased bowl. Cover it with a clean kitchen towel and let it rise in a warm place for about 1 hour or until it has doubled in size.

Once risen, punch down the dough to release the air. Shape it into a loaf and place it in a greased loaf pan.

Cover the loaf pan with the towel again and let the dough rise for another 30 minutes until it has risen above the top of the pan.

Preheat the oven to 375°F (190°C) during the last 10 minutes of rising.

Bake the bread in the preheated oven for 30 minutes or until the top is golden brown and sounds hollow when tapped.

Remove the loaf from the oven and let it cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.