As the consulting oenologist, Antonini assists with winemaking protocols. Michel Rolland, a prominent French oenologist, has been consulting at the estate since 2005. Since 1970 Gaja has employed the eminent oenologist Guido Rivella. In May 2011, Dante Scaglione communicated his return as oenologist to Giacosa's winery. In 2008, the oenologist Giorgio Lavagna was employed as the successor. He is also an oenologist and, like his father, is passionate about champagne.