How to Make It
Preheat the oven to 300°. Bake the pita bread directly on the oven rack for 10 minutes, or until the bread is dry and crisp but not browned. Let the pita bread cool completely, then break it into 1-inch pieces.
Meanwhile, in a large bowl, combine the romaine ribbons with the sliced scallions, cucumbers, quartered tomatoes, chopped parsley, mint leaves and ground sumac. Drizzle the olive oil over the salad, season with salt and pepper and toss to coat. Add the toasted pita bread pieces to the salad and toss again. Serve at once.
Sumac is a fruity, tangy spice that is ground from the dried berries of a wild Mediterranean bush. It is available at Middle Eastern markets.