What Makes Up Terroir?
Terroir is a holistic concept that encompasses every environmental factor affecting the vine:
- Soil composition — limestone, clay, gravel, slate, or volcanic rock each impart distinct mineral qualities to grapes
- Climate — temperature ranges, rainfall, sunshine hours, and wind patterns shape grape ripening
- Topography — altitude, slope angle, and orientation toward the sun influence heat accumulation and drainage
- Biodiversity — surrounding plants, fungi, and microorganisms contribute to the vineyard ecosystem
Why Terroir Matters
The concept of terroir is central to European wine law. French appellations, Italian DOCGs, and Spanish DOs are all built on the idea that place matters more than winemaker technique. A Grand Cru Burgundy vineyard can produce wine worth ten times that of a village-level vineyard just metres away — the difference is terroir.
Terroir in the New World
While Old World winemakers have long championed terroir, New World regions like Napa Valley, Barossa Valley, and Mendoza are increasingly emphasising site-specific character. Sub-appellations and single-vineyard bottlings reflect a growing respect for the uniqueness of place.