Grape varieties and styles

Champagne is a single Appellation d'Origine Contrôlée. As a general rule, grapes used must be the white Chardonnay, or the dark-skinned "red wine grapes" Pinot Noir or Pinot Meunier. Due to the gentle pressing of the grapes and absence of skin contact during fermentation, the dark-skinned varieties also yield a white wine. Most Champagnes are made from a blend of Chardonnay and Pinot Noir, for example 60%/40%. Blanc de blanc ("white from white") Champagnes are made from 100% Chardonnay. Possibly the most exquisite, and definitely the most expensive of these is grown in a single Grand cru vineyard in Le Mesnil-Sur-Oger for Salon. Blanc de noir ("white from black") Champagne is pressed from Pinot Noir, Pinot Meunier or a mix of the two.
There are several other grape varieties permitted for historical reasons, however, but rare in current usage. The sparsely cultivated varieties (0.02% of the total vines planted in Champagne) of Arbanne, Petit Meslier and Pinot Blanc, may still be found in modern cuvées. while the directives of INAO make conditional allowances according to the complex laws of 1927 and 1929, and plantings made prior to 1938.[2 The complete list of the nine actual and theoretical varieties reads Pinot Noir, Pinot Meunier, Chardonnay, Pinot Blanc, Arbanne, Petit Meslier, Pinot gris (in Champagne named Fromenteau), Pinot de juillet and Pinot rosé. The Gamay vines of the region were scheduled to be uprooted by 1942, but due to World War II, this was postponed until 1962.
The dark-skinned Pinot Noir and Pinot Meunier give the wine its length and backbone. They are predominantly grown in two areas - the Montagne de Reims and the Valée de la Marne. The Montagne de Reims run east-west to the south of Reims, in northern Champagne. They are notable for north-facing chalky slopes that derive heat from the warm winds rising from the valleys below. The River Marne runs west-east through Champagne, south of the Montagne de Reims. The Valée de la Marne contains south-facing chalky slopes. Chardonnay gives the wine its acidity and biscuit flavour. Most Chardonnay is grown in a north-south-running strip to the south of Epernay, called the Côte des Blanc, including the villages of Avize, Oger and Le Mesnil-Sur-Oger. These are east-facing vineyards, with terroir similar to the Côte de Beaune. The various terroirs account for the differences in grape characteristics and explain the appropriateness of blending juice from different grape varieties and geographical areas within Champagne, to get the desired style for each Champagne house.m
the wines makers grape will be boiling for minimum 4-6 days,
then the 11 process for final wine.