4 cask = 1 case; 40 cask = 10 cases. Below Prices per bottle. Order 10 cases or more of this product or any other spirits to receive 2nd level pricing. You can mix products. Blue Nun Riesling is a popular German white wine, 9% ABV, conveniently packaged in a 3-litre bag-in-box (cask) format. This aromatic Riesling offers a harmonious balance of fruitiness and refreshing acidity, with notes of green apple and peach. Available for wholesale in cases of 4 casks, it's an excellent bulk purchase for New Zealand businesses seeking high-quality imported European white wine for high-volume service.