The innovative machine-made Sour Glass of the functional glass collection Riedel Barware is equipped with an outward flared lip, essential for the traditional sour. The shape of this glass delivers the silky smoothness to the entire palate, directing the otherwise strong flavor profile to the tip of the tongue where it will be most enjoyed, in keeping with Riedel's form-follows-function ethos. The Riedel Barware Drink Specific Glassware is made in collaboration with spirits specialist Zane Harris, answering the need for cocktail-specific glassware among restaurants and bars with six glasses perfected for thousands of cocktails. The glasses are based off the traditional serves for seven classic cocktails: The Old Fashioned, Manhattan, Daiquiri, Sour, Peasant, Buck and Julep. Working in partnership with Riedel, Harris created each glass giving specific attention to its size, shape, volume and capacity for ice, a concept in its totality never before explored by any glassware company. ""Ice has the greatest influence in glassware design as it is in practically every drink, not just the cocktail,"" notes Harris. ""Riedel Bar Drink Specific Glassware ice glasses are designed to seamlessly answer two of hospitality's greatest frustrations– liquid displacement and the distorted consumer perception of being underserved."" Each unique glass in the Riedel Bar Drink Specific Glassware collection is crafted in Riedel's familyowned factories.