Champagne

The name is tied to a delimited area, and nothing made outside it may use the word regardless of how carefully it was produced. The rules cover which grapes may be planted, how the fruit must be pressed, the yields permitted, and how long a wine must rest before it may be released. What the region itself contributes is chalk soil and a climate that barely ripens grapes, which is where the acidity comes from. South African producers working the same way use a name of their own instead.

Chardonnay, Pinot Noir and Pinot Meunier do most of the work. Chardonnay brings citrus, chalk and precision, Pinot Noir brings body and red-fruit weight, and Pinot Meunier brings an early-drinking softness that fills the gap between them. Blanc de blancs means the wine came only from white grapes, in practice Chardonnay, and tends to be leaner and longer-lived. Blanc de noirs means the reverse: a white wine pressed carefully off black grapes so no colour carries through.

A two-letter code near the bottom says who actually made the wine. NM covers houses that buy in fruit and blend at scale, RM marks a grower using vineyards they farm themselves, and CM indicates a cooperative. None of them is a quality mark, but each explains a lot.

It blends several harvests rather than declaring one. In a cool region where ripeness swings hard from year to year, blending is how a house keeps its style recognisable, often drawing on reserve wines held back earlier. Vintage bottles are declared only in years a producer judges worth it.

After the second fermentation the dead yeast cells break down slowly in contact with the wine. That adds bread crust, toasted nut and pastry notes, thickens the texture, and makes the bubble feel finer. Minimum resting periods are set by the rules, and many bottles go well beyond them.