In a bowl, combine all the ingredients for the salsa and season to taste with salt and pepper. Cover and chill until ready to serve.
4 plum tomatoes, 2 green onions, 12 black olives, 2 garlic cloves, 2 tbsp. fresh parsley chopped, 1 tbsp. extra-virgin olive oil, 1 tbsp. balsamic vinegar, Sea salt and freshly ground black pepper to taste