Vincent Couche Champagne ADN Montgueux Brut Nature 2009About the wine: Organic Biodynamic a somewhat rare thing in Champagne. ADN is also un sulfured and non dosage, but its most important distinction is that it spends nearly 8 years on the lees after Couche barrel ferments 100% Chardonnay sourced from 7. 35 acres in Montgueux The total output of Montgueux in 2009 was a mere 188 cases. About the producer: Vincent Couche was one of the first producers to work biodynamically in Champagne, starting back in