Garlic and Rosemary Garden Focaccia

Ingredients

• 1 package or 2¼ teaspoons active dry yeast
• ½ teaspoon sugar
• 2¼ cups water, heated to 110°–115°
• 5 cups all-purpose flour
• 1 tablespoon kosher salt
• 2 cloves garlic, minced
• 2 tablespoons chopped fresh or dried rosemary
• ½ cup extra-virgin olive oil, divided
• Flaky sea salt
• Herbs and sliced vegetables for decoration, optional