Many wines and other liquors are blended before bottling !! At least your friend and I are on the same wave length !!
I am sure you have seen a somalier swirling his glass of wine and sniffing !! Brandy and whiskey are also done the same way !! They check for many things before its bottled and aged !!
There may be better methods now days but some still do things the old way !!
But then again,, your link looks better than my theory !! Guess its a terrarium !!