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…

Moscatel vine-shoot extracts as grapevine biostimulant to increase the varietal aroma of Airén wines

There is a growing interest in the exploitation of vine-shoots waste, since they are often left or burned. Sánchez-Gómez et al. [1] have shown that vines-shoots aqueous extracts have significant contents of bioactive compounds, among which several polyphenols and volatiles are highlighted. Recent studied had demonstrated that the chemical composition of vine-shoots is enhanced when vine-shoots are toasted
[2,3]. The application of vegetable products in the vineyards has led to significant changes towards a more “Sustainable Viticulture”. An innovative foliar application for Airén vine-shoot extracts have been carried out to the vineyard. It has been shown that they act as grape biostimulants, improving certain wine quality characteristics [4].

Phenolic composition of Tempranillo Blanco grapes changes after foliar application of urea

Our research aimed to determine the effect and efficiency of foliar application of urea on the phenolic composition of Tempranillo Blanco grapes. The field experiment was carried out in 2019 and 2020 seasons and the plot was located in D.O.Ca Rioja (North of Spain). The vineyard was Vitis vinifera L. Tempranillo Blanco and grafted on Richter-110 rootstock. The treatments were control (C), whose plants were sprayed with water and three doses of urea: plants were sprayed with urea 3 kg N/ha (U3), 6 kg N/ha (U6) and 9 kg N/ha (U9). The applications were performed in two phenological stages, pre-veraison (Pre) and veraison (Ver). Also, each of the treatments was repeated one week later. Control and treatments were performed in triplicate and arranged in a randomised block design. Grapes were harvested at optimum ripening stage. High-performance liquid chromatography was used to analyse the phenolic composition of the grapes. Finally, the results obtained from the analytical determinations – flavonols, flavanols and non-flavonoid (hydroxybenzoic acids, hydroxycinnamic acids and stilbenes) – were studied statistically by analysis of variance. The results showed that, in 2019, U6-Pre and U9-Pre treatments increased the hydroxybenzoic acid content in grapes, and also all foliar treatments applied at Pre enhanced the stilbene concentration. Moreover, U3-Ver was the only treatment that rose flavonol and stilbene contents in the Tempranillo Blanco grapes. In 2020, all treatments applied at Pre enhanced the flavonol concentration in grapes. Furthermore, U3-Pre and U9-Pre treatments increased stilbene content in grapes. Nevertheless, the hydroxybenzoic acid content was improved by U6-Ver and U9-Ver and besides, hydroxycinnamic acid concentration in grapes was increased by all treatments applied at Ver. In conclusion, the lower and highest dose of urea (U3 and U9), applied at pre-veraison, were the best treatments to improve the Tempranillo Blanco grape phenolic composition.

Vitis v. corvina grapes composition and wine sensory profile as affected by different post harvest withering conditions

Context and purpose of the study – In Valpolicella area (Verona – Italy) Vitis vinifera cv. Corvina is the main wine variety to obtain, after grape withering, Amarone wine: this study was carried out in order to compare two different grape dehydration conditions with the aim of verifying the final composition of Corvina dried grapes and the organoleptic profile of corresponding Amarone wine.

The Hungarian system of geographical indications and the preparation of product specifications

Following the 2008-2009 reform of the European Union’s common market organisation in wine all protected designations of origin and geographical indications were imposed to prepare a product specification that described the conditions of their use. In this paper, we describe this process and the Hungarian system of geographical indications.

Chemical profiling and sensory analysis of wines from resistant hybrid grape cultivars vs conventional wines

Recently, there has been a shift toward sustainable wine production, according to EU policy (F2F and Green Deal), to reduce pesticide usage, improve workplace health and safety, and prevent the impacts of climate change. These trends have gained the interest of consumers and winemakers. The cultivation of disease resistant hybrid grape cultivars (DRHGC), known as ‘PIWI’ grapes can help with these objectives [1]. This study aimed to profile white and red wines produced from DRHGC in South Tyrol (Italy). Wines produced from DRHGCs were compared with conventional wines produced by the same wineries. The measured parameters were residual sugars, organic acids, alcohol content, pigments and other phenolics by LC-QqQ/MS, colorimetric indexes (CIELab); and volatile profiles (HS-SPME-GCxGC-ToF/MS [2]).