Also permissible name for the DOCG area Brachetto d'Acqui; see there.
DOCG area (also Acqui) for red and rosé wines in the Italian region of Piedmont. The zone covers 415 hectares of vineyards in the complete extent of the municipalities of Bubbio, Calamandrana, Cassinasco, Castel Boglione, Castelletto Molina, Castel Rocchero,...
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi