In addition to a few rare varieties, almost exclusively Chardonnay is grown on the family’s vineyards, while the most prized of all is a 0.15-hectare monopole plot, Clos des Maladries, which was planted by Étienne's grandfather. A clos is a walled vineyard, typical of Champagne, of which there are a total of less than 30 recorded in the entire region. One of these is owned by the Calsac family, which is Clos des Maladries, in Avize, with a total of 0.15 hectares of 40-plus-year-old Chardonnay vines. The narrow rows are ploughed by horses, the cultivation has been organic since the beginning, the grandparents keep an eye on this vineyard to this day, as it’s also the back garden of their house.

35% of the spontaneous fermentation was in barrels and the rest in tanks. It was bottled without filtering and fining, then aged for three years before disgorging. It’s refined, detailed and mature – part of the fine wine category.

It was disgorged in May 2023. Extra Brut, dosage: 2 g/l