Can be prepared in 45 minutes or less.

Ingredients

　　1 head of red-leaf lettuce, rinsed, spun dry, and torn into small pieces

　　1 head of Bibb lettuce, rinsed, spun dry, and torn into small pieces

　　1/2 cup thinly sliced scallion

　　2 tablespoons white-wine vinegar

　　1/3 cup olive oil

　　In a large bowl toss together the lettuces and the scallion. In a small bowl whisk together the vinegar and salt and pepper to taste, add the oil in a slow stream, whisking, and whisk the dressing until it is emulsified. Toss the salad with the dressing.