Brett happens

Champagne, Grand Cru, Blanc de Blancs, Diapason, Pascal Doquet ($73.25, 12946063)
100% Chardonnay from organically farmed old vines in vineyards in Le Mesnil-sur-Oger (poor clay over chalk). A blend of wines from the 2006 (84%) and 2005 (16%) vintages. Vinified in a enamelled stainless steel tanks (80%) and small, neutral oak barrels (20%). Fermented with indigenous yeasts. Aged 96 months on lattes. Dosage (with rectified grape must): 4.5 g/l. Disgorged in April 2015. Reducing sugar: 5.4 g/l. 12.5% ABV. Quebec agent: oenopole.
A shade golder than the other wines in the tasting. Engaging nose of lees, yeast and subdued white fruit faintly overtoned with white spice and powdered ginger. Dry yet richer than its predecessors. The soft bubbles, sleek acidity and ideal extract confer a beguiling texture. Chalky minerals and subtle, slightly browning fruit last well into the slow-fade finish with its lingering lemon and flint notes. Balanced and complete. Suggesting resonance and harmony, the cuvée name is most appropriate. (Buy again? Yes.)