The Prosecco is an Italian sparkling white wine produced from Glera grapes (previously known as Prosecco) and its name comes from Prosecco, an Italian village where the grape is thought to have originated from.
The change of name for the grape, from Prosecco to Glera, is a consequence of the Prosecco acquiring the DOC and DOCG status and becoming a protected name under the European law, making essentially illegal for wines produced outside the Prosecco area in the north East of Italy to be labelled as Prosecco, until then any wine made with the prosecco grape could have been called prosecco.
Whilst the status of Prosecco DOCG has only been given to sparkling wines made in the Valdobbiadene, Cartizze and Asolo areas, the DOC status comprises sparkling wines made with glera grapes grown in a wide area comprising 3 regions, Veneto, Trentino and Friuli. Any other spakling wine made with Glera grapes grown outside the area cannot be called Prosecco but Glera or any other name the producer like and will include the word "spumante" to indicate that it is a sparkling wine.
Prosecco is a spumante made following the method Charmat or Martinotti, the Italian who originally developed the method, and the fermentation takes place in stainless steel tanks and last from anything between 30 days to 3 months, the longer the fermentation the better is the quality.
Prosecco is an aromatic and crispy sparkling wine, light and refreshing unlike Classic Method sparkling wines