Water
Water is not only an elemental liquid; it is also of fundamental importance for each beer. How well, or how refined, a beer tastes depends to a large part on the quality of the water.
Naturally as Austrians, we are very fortunate in this regard. Our water is known world wide for its purity and outstanding quality (few nitrates, etc.). In addition most breweries possess stores of water that are shielded from negative environmental influences. Some even possess, like Schloss Eggenberg, their own centuries-old source of water; a palace spring.