An Inconvenient Drink

Well, this is the spirit (as it were):

A Danish brewery in Greenland is brewing beer using water from the melting Arctic ice-cap.... The brewers claim that the water is at least 2,000 years old and free of minerals and pollutants. The first 66,000 litres of the new dark and pale ales are on their way to the Danish market.

I suppose the real question is what temperature it is best served at...