# Exploring the Typicality, Sensory Space, and Chemical Composition of Swedish Solaris Wines
## 1 Introduction
This potential diversity of styles leads to the main question of the present work: Is there an existing concept of Solaris typicality? Do the Swedish wine experts have a shared representation of what a typical Solaris should smell and taste like? Therefore, it is necessary to investigate first if Solaris wines exist as a varietal wine sensory category and, if so, which are its most salient and typical sensory features. Different approaches have been used to characterize wine categories from a sensory point of view. Some of those approaches were based on quantified sensory description and aimed to pinpoint specific co-occurrence of sensory features for a given wine category and not the neighboring categories [19]. From a cognitive point of view, typicality is the degree to which an item is a good example of its category [20]. This approach has been previously used to explore wine-related sensory categories such as variety [21] or origin [22; 23]. Typicality of the wines is often associated to tradition as it is usually linked to a specific \"terrorir\" or wine of origin, but it can also be linked to other parameters, such as the use of specific winemaking practices [24]. Additionally, the increase in temperatures due to climate change is defying the typicality of certain wine regions [4], leading to an adaptation of the viticulture and winemaking practices to preserve the typical character of the wines. Several studies used alternative names to typicality such as exemplarity [25], representativity [26], or typicity [27]. The reliability of typicality measurements depends on the expertise or familiarity of the tasters with regard to the category at hand as well as on the between-judges agreement [21; 22]. Often, typicality assessments are combined to sensory descriptive and physico-chemical analyses [22; 23]. Different studies have investigated the chemical compounds, volatile and non-volatile, responsible for typical sensorial attributes of a number of relevant wine categories [19; 28; 29; 30]. However, these compounds are not exclusive to one single grape variety, but their transformation during winemaking and the subsequent interactions with other compounds will contribute to the wine identity [31; 32]. In this respect, very little information is available concerning Solaris varietal aromas and the non-volatile composition related to color, phenolic composition, acidity, or alcohol content [33; 34; 35]. Concerning primary-derived aromas, terpen were previously reported in Danish Solaris [13] and a recent study has shown the presence of polyfunctional thiols in Belgian Solaris wines [36]. The present work aims to elucidate whether the Swedish wine experts have or not a preconceived idea on what a typical Solaris wine should smell and taste like. Together with Swedish Solaris wines, international white wines from different grape cultivars and origins were also investigated. In addition, the chemical characterization of the volatile and non-volatile composition of the wines aims to identify possible markers associated with Solaris wines.