They've done taste tests on TV with these wine snobs. For a given wine it is not possible to tell what kind of container it has been stored in by its taste.

For screwcaps I can easily believe this. For wine in a box, I'd say
"more research is called for" (like how long does the box last in a damp
cellar after ten years or thirty). It may well work for fine wines too,
but the wine industry moves slowly. (as it should - discovering a
problem with a container after ten years does wonders for the ten year
old wine maturing in those containers.)

I'd like to see champaigne in a box.

Jose
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