Terroir 2016 banner
IVES 9 IVES Conference Series 9 Talking about terroir

Talking about terroir

Abstract

When talking about terroir, scientists and lay wine tasters, very much including wine journalists and wine growers, too often talk past one another.

“Terroir” may be among the most irritatingly vague and slippery words in the wine growers’ and wine critic’s vocabulary, but scientists, too, seem conspicuously unwilling to render this notion more precise; and if a shared and mutually useful concept cannot be achieved, how can we reach genuine agreement or disagreement in our claims about terroir, let alone address or mitigate one another’s perplexity?

Moreover, it often appears as if parties to alleged explications of terroir fail even to agree on the phenomenon that demands explanation. Wine tasters are frustrated with scientists who make no attempt to account for but instead treat as implausible or debunk claims for organoleptic experience of wine as varying with regularity and predictability depending on site and soil type. Entire books have been written about vineyard geology under the rubric of terroir without accounting for how rocks might actually influence taste. Specialists often advise on where best to plant wine grapes seemingly oblivious that “best” can make sense only if location somehow ultimately influences taste. Yet scientists can be forgiven their frustration with and dismissals of utterly implausible pictures that wine tasters have painted for themselves about how soil and site might influence taste.

Examples will be offered of some common conceptual pitfalls into which both scientists and laity stumble when discussing “terroir.” Treating this term as by its nature evaluative undermines attempts to define site potential; treating it as encompassing anything that might impinge on the eventual character of wine including viticultural and cellar practices renders it so all-encompassing that it fails to mark any significant distinction. Positing something called “minerality in wine” trades on equivocation and conceptual muddle.

It will be proposed that “terroir” be defined as those constraints placed on (or opportunities afforded) a vintner and the eventual flavors of his or her wine by the location in which that wine was grown. Several senses of terroir influence consistent with that definition will be explicated, each differing in scope and in the role assigned to grape variety and vine genetics. It will be argued that the notion of wine as exhibiting terroir character and tasters’ ability to discern characteristics causally associated with site are neither more nor less problematic than the analogous notion of vintage character or its identification as predicated on the influence of weather on vine metabolism, fruit maturation and ultimately flavor. It will be suggested that much more scientific research should be devoted to measuring how much or how little such ability tasters can develop, as opposed to imagine themselves possessing, because this will circumscribe investigations into how site influences flavor and determine how relevant place is to pedigree.

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

David Schildknecht

Wine Writer, The Wine Advocate and other wine publications, USA

Contact the author

Keywords

Touriga Nacional; Touriga Franca; Climate Change; Summer Stress; Douro Region; Morpho Anatomy; Biochemistry

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Rare earth elements distribution in grape berries

Rare Earth Elements (REEs) include 15 lanthanides, yttrium and scandium. Their occurrence in soil and plants seems to be closely tied to the geological composition of the underlying mother rock, to the physical and chemical properties of the soil and to the specific ability of the plant to take up and accumulate these microelements.

Amino nitrogen content in grapes: the impact of crop limitation

As an essential element for grapevine development and yield, nitrogen is also involved in the winemaking process and largely affects wine composition. Grape must amino nitrogen deficiency affects the alcoholic fermentation kinetics and alters the development of wine aroma precursors. It is therefore essential to control and optimize nitrogen use efficiency by the plant to guarantee suitable grape nitrogen composition at harvest. Understanding the impact of environmental conditions and cultural practices on the plant nitrogen metabolism would allow us to better orientate our technical choices with the objective of quality and sustainability (less inputs, higher efficiency). This trial focuses on the impact of crop limitation – that is a common practice in European viticulture – on nitrogen distribution in the plant and particularly on grape nitrogen composition. A wide gradient of crop load was set up in a homogeneous plot of Chasselas (Vitis vinifera) in the experimental vineyard of Agroscope, Switzerland. Dry weight and nitrogen dynamics were monitored in the roots, trunk, canopy and grapes, during two consecutive years, using a 15N-labeling method. Grape amino nitrogen content was assessed in both years, at veraison and at harvest. The close relationship between fruits and roots in the maintenance of plant nitrogen balance was highlighted. Interestingly, grape nitrogen concentration remained unchanged regardless of crop load to the detriment of the growth and nitrogen content of the roots. Meanwhile, the size and the nitrogen concentration of the canopy were not affected. Leaf gas exchange rates were reduced in response to lower yield conditions, reducing carbon and nitrogen assimilation and increasing intrinsic water use efficiency. The must amino nitrogen profiles could be discriminated as a function of crop load. These findings demonstrate the impact of plant balance on grape nitrogen composition and contribute to the improvement of predictive models and sustainable cultural practices in perennial crops.

Olfactometry approach to assess odorant compounds of grape spirits used for Port wine production-first results

The production of Port Wine requires the addition of grape spirit to stop the fermentation, ensuring the desired sweetness

Does wine expertise influence semantic categorization of wine odors?

Aromatic characterization is a key issue to enhance wines knowledge. While several studies argue the importance of wine expertise in the ability of performing odor-related sensory tasks, there is still little attention paid to the influence of expertise on the semantic representation of wine odors.

Assay of distinct modes of polysaccharidases dosage in vinification with cv. Malbec. Effects on microbiological evolution, color and skin depletion

In the maceration stage of winemaking, enzymes can be used to degrade the polysaccharides present in the cell walls and middle sheets, and thus facilitate the extraction of juice and the release of polyphenols and aroma precursors retained in the grape skins.