Brettanomyces, called brett for short, are often associated with manure-like smells. This genus of yeast can rob wine of its fruity aromas, replacing those with manure, horse blanket, barnyard, or sometimes Band-Aid scents. However, while many winemakers—especially in the New World—abhor even the faintest whiff of brett and will scrupulously clean their wineries to prevent brett from growing, other winemakers find a faint suggestion of brett aromas attractive as part of an otherwise complex wine.


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