The 30 Years White Port is a field blend from old vines (50 plus years). It was bottled in July 2017 with 112 grams per liter of residual sugar. This is not necessarily head and shoulders over the 20 Year tasted this issue, but it is very different. Much darker in color, its main flavor difference comes from its far superior complexity. If it lacks the fresh vibrancy of the 20, it is hardly old, dying or decayed. It is a prime time white Port. Moreover, it finishes with a fascinating array of old Tawny-like flavors, including just a whiff here and there of brandy as it airs and warms. Simply beautiful, this seals the deal with its seemingly endless finish. It's gorgeous. You'll love tasting it because it is delicious. It's also a wine to contemplate, probably my favorite white Port of this report.