Which wine components affect ageing?
Eric Lecours, San Francisco: I am trying to get a firm understanding of the qualities of an ageworthy wine. My understanding is that structure and intensity of flavour are required for a wine to age well. The components of structure provide the foundation upon which wine can age and flavour can develop, those structural components being tannin, alcohol, sugar and acid. I believe tannin is fairly straightforward; it is an anti-oxidant so it protects the wine from oxidation. I'm guessing alcohol acts as a preservative but am not sure what is at work there. Is sugar is an antioxidant as well? I'm not sure what is at work there either. It...
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