Ensalada de Aguacate y Piña

Ingredients
Mix the following ingredients for a simple Cuban style salad.


 * Shredded iceberg lettuce
 * 2 cups of pineapple chunks
 * 1 large avocado, peeled and cut in slices
 * 1 small onion, sliced thin
 * olive oil
 * red wine or cider vinegar
 * salt and pepper