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Question:

Why are the lids of some wines iron and some cork?

Why are the lids of some wines iron and some cork?

Answer:

Wine has a certain acidity, and if the lid is iron, it will corrode the iron lid after contact with alcohol. So wine is usually a wooden stopper, not an iron lid. As for some iron lids, then there must be rubber mats under the iron cover, when the wine is separated from the iron. It's usually cheaper to make iron lids.
So the hot metal screw cap, and got the most new world winery recognized by the state, part of the old world wineries began to follow, but most of the old world wine or love with traditional cork, because they don't think inside or not Wine the cork.
The original wine is basically a cork, then the new world winery that has not environmental protection, dry cork or mildew caused quality decline, high cost, open a bottle of complex and many other negative factors

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