Champagne produced by the same estate that owns the vineyards where the grapes are grown is called Grower Champagne. The French term for a grower is 'Récoltant-Manipulant’ and Grower Champagnes can be identified by the initials ‘RM’ on their back labels. Although there are some 16,000 growers in Champagne, they account for a small proportion of the export market. The very best Grower Champagnes are extremely sought after and can be incredibly difficult to source.