Reviews · Howell Mountain 2018 Arkenstone Sauvignon Blanc Reserve Estate 1 note Tasted 7 December 2019 ProducerArkenstone WineAll vintages RegionNapa Valley · Howell Mountain GrapesSauvignon Blanc The note Csimm on this bottle 7 December 2019 So, there's the Estate Sauvignon Blanc...and with the 2018 vintage there will also be this RESERVE Sauvignon Blanc to put its dukes up and battle the…