The Cognac Hennessy glass is perfect for providing the ideal tasting expirience of Cognac: fruit, body, finesse and fire. Cognac is mainly served in wide balloon-shaped glasses - in spite of the disadvantages which this shape has for the enjoyment of cognac. The finely tuned shape of this glass harmonizes aroma and taste, tempers alcohol and stringency of the palate, and empasises the bouquet. The thin tulip-shaped glass allows its contents a very small evaporation surface.This piece is produced with clear crystal.Vinum is Riedel's basic varietal specific stemmed series. Designed in 1986 by 10th generation glassmaker Georg J. Riedel, Vinum was created to ensure every wine lover could afford varietal-specific glassware. Based on the handmade Sommeliers range, machine production means Vinum can be offered at a more accessible price.This item is Premium machine-made. 'Premium' defines the advantage of a machine blown Riedel glass vs. a hand-made glass. The difference lies within the precision.