Simple Lettuce Salad

2 cups torn leaf lettuce1 hard-cooked egg, chopped1 green onion, sliced2 tablespoons mayonnaise1 teaspoon cider vinegar? teaspoon pepperIn a salad bowl, combine the lettuce, egg and onion. In a small bowl, whisk the mayonnaise, vinegar and pepper. Pour over salad and toss to coat.