Gran Selezione is the newest quality designation to have been added to the DOCG classification system in Chianti Classico. Gran Selezione takes quality controls a step further than Riserva-- which previously occupied the top tier-- by banning the use of any purchased, or non-estate-grown fruit, in the inclusion of a wine labeled Gran Selezione. This coupled with longer aging requirements (30 months minimum) and minimum levels of alcohol set to 13% designates a band of wines from Chianti Classico producers representative of the appellation's highest quality potential with often limited availability.