Ernest Bourmault, originally from the departement of Sarthe, came to Champagne in 1865, where he married Hermance Roudeaux, daughter of Joseph Roudeaux and from him they received a parcel of vines in Cuis, next to Cramant. Their son married a young woman named Rosa (pay attention to these first names, you will see them as the names of two cuvees : -).
Two generations later Christian Bourmault took over the domain from his father. Today he, his wife Yveline, and their son, Anthony have 6.5 hectares, with most in Cuis (a terroir important for Bollinger), but also nearly one hectare in Avize (the Clos Bourmault) and small holdings (where part of the Hermance cuvee is sourced) in Mareuil le Port, Cerseuil and Leuvrigny (Krug has significant holdings here). Viticulture is essentially organic for all their vines, certified as such in the Clos Bourmault, indigenous yeast fermentations, aging entirely in barrique, except the Hermance, which is 1/3 barrique, bottling 10 months after vinification, then minimum 36 months sur latte.