>In Alsace (the only place in France allowed to grow Riesling)
>chaptalization is strictly forbidden on AOC wines.

Yes, but that doesn't necessarily mean that it isn't practiced.

>I might add that with the appearance of reverse osmosis machines by
>the thousands in France and elsewhere in Europe, chaptalization may
>have become an obsolete enrichemnt scheme, way too expensive compared
>to renting an osmosis truck for the day...

Can that be true? Sugar more expensive than RO? I have no particular
objection to RO, but it is my understanding that it is an expensive
process.

Andy