The 164 uses 2008 as a base.  This is pehnominal albeit very young at the moment.  Light golden in color.  A beautiful mousse with a lot of tiny bubbles.  The nose is great with slight toasted note with pears and slight lemon.  Also an underlying minerality.  With air a slight nutty note emerges.  On the palate, this is deep and complex yet precise.  It unwinds nicely in the glass.  Lemony with slight orange notes.  Minerals.  Great acidity.  Very pesistent and lemony finish.  Amazing length.  Great with food.  This has penty of upside but is great right now.  Excellent.