This recipe can be prepared in 45 minutes or less.

Ingredients

　　1 heart of romaine

　　2 teaspoons white-wine vinegar

　　2 tablespoons extra-virgin olive oil

　　2 ounces freshly grated Parmesan (about 2/3 cup)

　　Separate romaine leaves. In a large bowl whisk together vinegar, oil, half of Parmesan, and salt and pepper to taste. Toss romaine with dressing and serve sprinkled with remaining Parmesan.