## 10 Concluding Remarks and Perspectives
The authenticity of spirit beverages is of the utmost importance for consumers, producers, governmental authority, and the agri-food sector, the reason why the role of coumarins in this topic was contextualised. Despite their low concentrations, the results support scopoletin and umbelliferone as chemical markers for ensuring the authenticity of agedspirit beverages, which has been a major concern and challenge for all players and researchers worldwide. Given the broad biological function exhibited by the coumarin chemical family, further research will be necessary in this matter. Conceptualization, S.C., S.O.-A., S.L. and T.A.F. ; investigation, S.O.-A., S.L., T.A.F. and S.C.; writing--original draft preparation, S.O.-A., S.L., T.A.F. and S.C.; writing--review and editing, S.C., T.A.F., S.O.-A. and S.L. ; supervision, S.C.; funding acquisition, S.O.-A., T.A.F. and S.C. All authors have read and agreed to the published version of the manuscript. This research was funded by the Foundation for Science and Technology (FCT) through the projects UIDB/00239/2020 [CEF], UIDP/00100/2020 [CQE] ([[https://doi.org/10.54499/UIDP/0010](https://doi.org/10.54499/UIDP/0010)]([https://doi.org/10.54499/UIDP/0010](https://doi.org/10.54499/UIDP/0010)) 0/2020), UIDB/00100/2020 [CQE] ([[https://doi.org/10.54499/UIDB/00100/2020](https://doi.org/10.54499/UIDB/00100/2020)]([https://doi.org/10.54499/UIDB/00100/2020](https://doi.org/10.54499/UIDB/00100/2020))), LA/P/0056/2020 ([[https://doi.org/10.54499/LA/P/0056/2020](https://doi.org/10.54499/LA/P/0056/2020)]([https://doi.org/10.54499/LA/P/0056/2020](https://doi.org/10.54499/LA/P/0056/2020))), contract CEECIND/02725/2018, and UIDB/05183/2020 [MED]. The authors declare no conflicts of interest. The funders had no role in the design of the study; in the collection, analysis, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. * [PERSON] et al. (2010) [PERSON] [PERSON]; [PERSON]; [PERSON]; [PERSON] Characterization and differentiation of monovarietal grape pomace distillate from native varieties of Galicia. _J. Agric. Food Chem._**2010**, _58_, 9657-9665. [CrossRef]
* [PERSON] (2012) [PERSON], C. Grappa: Production, sensory properties and market development. In _Alcoholic Beverages. Sensory Evaluation and Consumer Research_; [PERSON], [PERSON]; Woodhead Publishing: Philadelphia, PA, USA, 2012; pp. 299-314. [CrossRef]
* [PERSON] and Lambrechts (2012) [PERSON]; [PERSON] Grape-based brandies: Production, sensory properties and sensory evaluation. In _Alcoholic Beverages. Sensory Evaluation and Consumer Research_; [PERSON]; Woodhead Publishing: Philadelphia, PA, USA, 2012; pp. 281-298. [CrossRef]
* [PERSON] et al. (2014) [PERSON]; [PERSON]; [PERSON]; [PERSON] First approach to the analytical characterization of barrel-aged grape marc distillates using phenolic compounds and colour parameters. _Food Technol. Biotechnol._**2014**, _52_, 391-402. [CrossRef] [PubMed]
* [PERSON] (2017) [PERSON] Phenolic composition and related properties of aged wine spirits: Influence of barrel characteristics. A review. _Beverages_**2017**, \(3\), 55. [CrossRef]
* [PERSON] et al. (2018) [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON] Simulation of spirits distillation for a better understanding of volatile aroma compounds behavior: Application to Armagnac production. _Food Bioprod. Process._**2018**, _112_, 31-62. [CrossRef]
* [PERSON] et al. (2020) [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON] Use of alternative wood for the ageing of Brandy de Jerez. _Foods_**2020**, \(9\), 250. [CrossRef]
* [PERSON] et al. (2020) [PERSON]; [PERSON]; [PERSON] [PERSON] Role of oak coumarins in the taste of wines and spirits: Identification, quantitation, and sensory contribution through perceptive interactions. _J. Agric. Food Chem._**2020**, _68_, 7434-7443. [CrossRef] [PubMed]
* [PERSON] et al. (2021) [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON] Sources of variation in bourbon whiskey barrels: A review. _J. Inst.