Geography

The Wachau is a small wine region in Lower Austria, about 50 miles west of Vienna, where the Danube river cuts a dramatic narrow valley through the gneiss-and-mica-schist mountains. The vineyards are perched on impossibly steep terraced slopes that have been worked since at least the 9th century. The terroir splits into roughly three soil zones: the river-bank loess sites (lighter, more aromatic wines), the lower-slope schist sites (more linear and mineral), and the upper-slope gneiss sites (the most powerful and age-worthy).

The Vinea Wachau classification

The Wachau has its own unique classification system, established by the Vinea Wachau Nobilis Districtus producers’ association in the 1980s and now widely respected. Three quality tiers based on grape ripeness and intended style: Steinfeder (lightest, up to 11.5% alcohol, meant for early drinking), Federspiel (the middle tier, 11.5-12.5%, comparable to a serious dry village-level wine elsewhere), and Smaragd (the top tier, 12.5%+, the most concentrated and age-worthy). ‘Smaragd’ is the local word for emerald — the color of the lizards that sun themselves on the warmer Wachau slopes.

Style of the wines

Wachau Smaragd Riesling: lime, white peach, white flower, smoke, slate, sometimes a savory smoky-mineral character from the gneiss soils. Wachau Smaragd Grüner Veltliner: lentil, white pepper, citrus, herb, sometimes a stone-fruit character in the warmer years. Both styles show remarkable structure and aging potential. Acid is bright to high; alcohol 12.5-14%; texture is glycerol-rich and full-bodied in the Smaragd category.

How they age

Top Wachau Smaragd from a great vintage ages twenty-five to thirty-five years and develops a honeyed, savory, smoky tertiary complexity. Emmerich Knoll’s Loibenberg and Schütt single-vineyard Rieslings drink remarkably at twenty-five years. The wines often need at least five years of bottle age before fully opening — Wachau Smaragd is one of the most age-worthy dry-white categories in Europe.

Producers we know

Emmerich Knoll (especially Schütt Riesling and the Vinothek Smaragd bottlings), Franz Hirtzberger (Hochrain, Singerriedel — among the most concentrated and structured Wachau bottlings), F.X. Pichler (cult, especially the M and Unendlich bottlings), Prager, Domäne Wachau (the regional cooperative — surprisingly serious for a coop).