A maduro wrapper is one that has been fermented harder and longer than a natural wrapper. The Spanish word means “ripe” or “mature.” The longer fermentation breaks down more sugars and starches in the leaf, producing a darker colour ranging from rich brown to nearly black, a denser texture, and a sweeter, fuller-bodied profile in the smoke. Notes commonly associated with maduros include cocoa, espresso, dried fruit, leather, and a sweetness that natural wrappers rarely match.
Maduro is not a single tobacco varietal. It is a treatment. Connecticut Broadleaf, Mexican San Andrés, and Brazilian Mata Fina are three of the most common leaves taken to maduro because they hold up to extended fermentation without falling apart. Each produces a distinct flavour signature within the broader maduro family. San Andrés tends toward earth and chocolate; Connecticut Broadleaf toward sweet bread and dark coffee; Mata Fina toward stone fruit and spice.
Maduros often carry slightly more residual ammonia after rolling because of how aggressively they have been fermented, and tend to reward longer rest more than natural wrappers do. A thick-ringed maduro double corona will smoke better at sixty days on a shelf than at thirty.
If you have not tried one, the Padrón 1964 Anniversary in maduro is the canonical entry point. The CAO Brazilia, the Joya de Nicaragua Antaño Dark Corojo, and the My Father Le Bijou 1922 are all worthy.
For more on cigar construction and how the wrapper, binder, and filler interact, see The Anatomy of a Cigar.