Cucumber Avocado Salad

1/2 English cucumber, thinly sliced

1 large tomato, cut into semi-thin wedges

1 avocado, cubed

1/4 red onion, thinly sliced

1 tablespoon Balsamic vinegar

Olive oil, to taste (it doesn’t need much)

1/2 teaspoon salt

Freshly cracked black pepper, to taste