A new study published in Nature Climate Change has revealed that Bordeaux red wines produced in the future will likely be more alcoholic and higher in tannin than those of today. Researchers predict that, due to climate change, the average maturity date of Merlot grapes in the Bordeaux region of France will shift two weeks earlier by 2023, resulting in a higher sugar content and a higher alcohol concentration in the wine. This shift could lead to a stronger flavor profile, with higher tannin and lower acidity. As the climate continues to warm, wine producers are likely to adjust their vineyard management practices to ensure the desired characteristics of their wines.

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source: Phys.org