Cuvée Ortus is only bottled in exceptional vintages
Selected juice is initially fermented as regular Sancerre Blanc, undergoes malolactic fermentation, but wine is aged in 400-L oak barrels, and the lees are stirred daily for a year. The wine is then racked into neutral cask where it ages and settles for an additional year.
Bottled unfiltered then aged for another year in bottle before release
Only made in select vintages; only the 2003 and the 2005 have been released so far and now the 2015.