Contratto has over 145 years of distinguished history. The winery was the first in Italy to make vintage ""metodo classico"" sparkling wine. In the 1920s and 1930s, it was the Contratto bubbles that were requested by the Vatican and the royal houses of Europe. The vinification is done according to classic method. After the initial alcoholic fermentation the base wines are vinified separately, then are aged for 8 months in temperature-controlled stainless steel vats, with bottle aging on the lees for a minimum of 3 years.