All natural. Peloponnese Olives are all grown on family farms in Greece. Our authentic Halved Kalamata Olives tree-ripened and naturally brine cured for the purple-black color, firm texture and full flavor. Even our brine (sea salt, water and sweet wine vinegar) is delicious. Try Our Halved Kalamata Olives: In salads, soups & stews; In hot or cold pasta dishes; Chopped in dressings and vinaigrettes; Add to cream cheese for sandwiches. Product of Greece.