After tasting Shinn Estate Vineyards‘ sauvignon blanc-based wines for several vintages now, it is clear that vineyard manager and co-owner Barbara Shinn has a way with the grape and that her piece of land is well suited to the variety. First Fruit, the winery’s steel-fermented sauvignon blanc is a perennial favorite — crunchy with acidity, citrusy, herb-y and faintly saline. Their Haven bottling is a completely different wine, and not just because it has some semillon blended in. The juice that becomes Haven spends extended time on the skins before being fermented by ambient yeasts in French oak. The result is…