Oregon's super-crisp Rieslings

I was sent a case of Oregon Rieslings to taste during my summer in the Languedoc. I'm used to tasting, actually drinking, German Riesling there. It seems the ideal wine for the high temperatures and humidity of a typical Languedoc summer. But these Rieslings from the Pacific Northwest seemed particularly exotic in that context.

As you can see, I was impressed by some of them, although others seemed a little formulaic, as though dominated by characteristics associated with yeast and winemaking more than by the vineyard and the grapes. That said, the wines were all well made and all had...