I bought a bottle of Argentinian Malbec in NYC last week, made by Vicien. The store owner told me a good story about it:
Apparently, it's made with organic grapes and not filtered. They take the wine from the tank into the casks only when there's a full moon, so the sediments naturally fall to the bottom of the tank due to changes in the gravitational forces on Earth at that time of the month. Somehow related to the ebb and tide of the sea.
Can anyone explain this better?