The co-operative was established in 1937 in the heart of the Grand Cru village of St Mesnil Sur Oger in the Ctes des Blancs, which is widely regarded as the source of the regions best Chardonnay, much of which is used to produce Blanc de Blancs Champagnes. It has around 500 members who between them own around 305 hectares.
The co-operatives principal business is the supply of Vin Clair to all the grand marques. However, Richards Walford are the first and only company to ask the co-operative to make its own Champagne under the Le Mesnil label. Le Mesnil Champagnes are made only from the finest Chardonnay grapes from 25 hectares of the co-operatives vineyards in the Grand Cru of St Mesnil Saint Oger.
Vineyards are located half on the plains and half on the hillsides, taking full advantage of the sun. Under Gilles Marguet, the principles of la lutte raisone are applied; limiting the use of chemicals, and yields are restricted by pruning the two canes back to 4-5 buds in each cane.
Wines are matured in the co-operatives chalk cellars