"aesthete8" asked of the group.................
> Has that dimished over the last 10-20 years?
Yes, definitely - and the reason is very simple.
There is a finite, tiny amount of methoxypyrazine available in the
environment for uptake into plants.
With the muchly increased plantings of Sauvignon Blanc, not only in
Marlborough NZ but other countries, trying to cash in on this varieties
newfound popularity, the uptake of methoxypyrazine in these areas mean that
reduced amounts are available elsewhere, and levels have significantly
dropped in all regions growing Cabernet Sauvignon.
Very interesting thesis here
http://www.pawinegrape.com/uploads/PDF%20files/Bibiana/2.%20Methoxypyrazines_Lakso-Sacks.pdf
..
Four One