ZeroWater

Water filtration

We speak often about the importance of filtered water in creating transparent and delicious coffee experiences. In our cafés, we employ carefully tuned reverse osmosis systems, but replicating their filtration results at home has been difficult. Especially in Denmark, and other hard water areas, the delicate, clean and juicy character of the finest coffees can be completely destroyed by brewing with high mineral content tap water.

Dissolved minerals in water exist as charged ions, which help us to bind to the flavour compounds that lead to the most exciting and involving cups. But balance of each is important, too much of one type of ion, and we can end up with a sharp and sour cup, too much of another, and the coffee is flat, dull and lifeless.