Colossal Castelventrano style Whole Green Olives are known for their buttery flesh, mild flavor and vibrant green hue making them appealing to the mainstream. Certified Gluten-free. Non GMO Prjoct verified, nongmoproject. Hand selected. Prepared in the Colossal Castelvetrano style in southern Italy, these colossal olives are mild and buttery. Perfect for snacking and appetizers. Free Shipping: as 4 Glass Jars. Refrigerate after opening.