The ease of the pre-made cubes and cylinders are part of the appeal for busy bartenders and restaurant owners whose customers are demanding craft cocktails, but balk at long wait times.

The cylinders are compact and take up less freezer real estate than standard mini ice trays. Available at Kitchen Outfitters, 342 Great Road, Acton, 978-263-1955; The Cook Shop, 1091 Route 6A ...