Sorry to go on about this but it does strike me as absurd. This is an extract from Glenmorangie's website: "Mineral rich water
The water itself comes from the Tarlogie Springs, which rises cheerfully and magically about a mile above the distillery. Set about with pines, the crystal pool is secluded and mysterious, its surface gently troubled by the waters bubbling up from below.
These waters once fell as rain on the Hill of Tain, in the shadow of where the springs are discovered, then filtered down through lime and sandstone rocks, gathering precious minerals on the way, before rising again at Tarlogie.
Water is used in every stage of the distillation process.
It can take up to one hundred years for the falling rain to re-emerge as spring water—'the water of Glenmorangie's life'. So precious is our source of water that we acquired the entire catchment area of the Spring—some 650 acres. "
To which they then add nearly a third of a litre of de-mineralised water at the dilution stage.
I am sure the Yanks lap up this nonsense, but doesn't it over-sentimentalise a wonderfully straightforward process. I think I might start a one man "Cut the Crap in Malt" campaign!