The 2015 vintage was awarded 93 points and Highly Recommended status by Decanter (www.decanter.com) in their September 2018 edition panel tasting of "Alternative" New Zealand Whites (not Sauvignon Blanc or Chardonnay) (see blue link below)...
Millton Riverpoint Viognier 2015 - Sept 2018 Decanter review
James Millton is a living legend in the New Zealand wine scene. A pioneer of organic and biodynamic winemaking, he has ploughed his own furrow for three decades, quietly convinced that his sustainable approach to viticulture and winemaking was the only way to progress.
The Millton winery's own tasting notes for this wine are excellent, so please click the blue link below to see all this wine's details.
Millton Riverpoint Viognier 2016 – fiche technique
ABV = 12.5%.