What Is the Rotass Blueberry 640g N₂O Cylinder and What Is It Used For? Answer: The Rotass Blueberry 640g N₂O Cylinder is a food-grade nitrous oxide gas tank designed for culinary and beverage applications. It is commonly used for whipping cream, creating foams, and preparing specialty drinks in cafés, dessert shops, and bars. The 640g capacity offers a compact and convenient option for small to medium-volume service, delivering consistent gas output for smooth textures and reliable results. https://www.rotasswhip.com/640g-steel-blueberry-n2o-cylinder