Flatbread, Za'atar

Ingredients

• 1 tablespoon instant yeast
• 2 cups lukewarm water (l00°F to 110°F)
• 2 teaspoons granulated sugar
• 2 tablespoons extra-virgin olive oil
• 2 cups unbleached all-purpose flour
• 5 cups unbleached special bread flour
• 1-3/4 teaspoons kosher salt
• 1/4 cup za'atar
• 1/2 teaspoon kosher salt
• Juice of two lemons, about 1/2 cup juice
• 3/4 cup extra-virgin olive oil