This mouth-blown absinthe glass is a replica that would have been commonly found throughout France in the 19th century. The glass has an easy-to-see reservoir (the area at the bottom of the glass where the absinthe is poured and measured), making it easy to measure a portion of absinthe. The reservoir sometimes varies, as glasses are hand-made and mouth-blown. The glass is made in the same proportions as an original piece that is over 100 years old. The reservoirs of absinthe glasses tend to vary greatly depending on the size of the glass. As absinthe is made to taste, the ratio of absinthe to water generally varies from 1 part absinthe to 3 - 5 parts water.