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Eveline Chartier's avatar

Hey Dave! This would be true if phenolic ripeness correlated to "sugar/acid" ripeness but they are actually two separate things. I will send you some really great visualizations that a colleague sent me. Unfortunately cannot post them here... good material for a future article!

Dave Baxter's avatar

"It depends on many factors - mainly where they are grown, the weather for the given vintage, and how long the grapes are allowed to ripen."

The key here is acidity levels. If a red wine has higher acidity, the pH shifts the color of the wine to ruby red, and the flavors shift to red fruit/"brighter" and "fresher" fruit flavors. As the acidity lowers, the pH shifts the color of the wine to blue-purple, offering first dark red (black cherry) then blue fruit (blueberry) then finally black fruit (blackberry, cassis).

So you can always know the acidity level of a red wine from the color alone - red = high, red-blue = medium, blue-purple = low. And the fruit flavors shift to match the color aka the acidity.

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