Until the 2008 vintage Prosecco was protected as a DOC within Italy, as Prosecco di Conegliano-Valdobbiadene, Prosecco di Conegliano and Prosecco di Valdobbiadene. From 2009, this has been promoted to DOCG status. To further protect the name, an association of traditional Prosecco growers is advocating a protected designation of origin status for Northern Italian Prosecco under European law. Since 1 January 2010, Prosecco is, according to an order of the Italian Minister of Agriculture of 17 July 2009, not the name of a grape variety any more (now to be called Glera), but exclusively a geographical indication. This was confirmed by EG-Regulation Nr. 1166/2009 of 30 November 2009.
Answer this question, making sure that the answer is supposed by the text: does prosecco have to be made in italy?
yes