Glera is a thin-skinned wine grape that has been grown in northern Italy for centuries, and is famous for its thick bunches of golden-yellow grapes. All Prosecco must be made with mixes that are ...

UNESCO has recognised it as such declaring the hills of Le Colline del Prosecco di Conegliano e Valdobbiadene a World Heritage Site, one of the eight sites in the Veneto region alone.