Maison Mumm's own vineyards cover nearly 218 hectares. The vineyards, in which Pinot Noir is highly dominant (78%), particularly in the Montagne de Reims, spread over the Grand Cru vineyards of Cramant and Avize devoted to Chardonnay in the Côte des Blancs and the Vallée de la Marne, where Pinot Meunier prevails.
The official échelle des crus champagne vineyard classification of 1911, which is still in use today, rates vineyards in relation to criteria such as soil quality, exposure to the sun and grape varieties planted. Out of a total of 319 communes, this classification identifies seventeen villages as Grands Crus (the very best terroirs in the Champagne region) and 42 other villages as Premiers Crus.

Exuberant bubbles and a brilliant, golden color testify to the vibrancy of this champagne. Lush aromas of ripe peach, apricot and pineapple cascade from the glass, chased by hints of vanilla and caramel, yeast, dried fruit and honey. One sip and Mumm Grand Cordon unleashes intense, complex flavors of fresh fruit and caramel that morph into a long, lingering finish.