Amsterdam Residents Use The Rainwater To Make The Beer

In the process of brewing beer, we can use city water, pure water. But can we use rainwater to brew beer?

A Dutch entrepreneur is working on this project to help the residents of Amsterdam collect or use rainwater to brew beer.

Then think about it: when life gives you lemons, you can make lemonade. It also means making the best of a bad situation.

They suffered the rainiest month and they didn’t complain about the rain. However, they decided to take advantage of the extra water. Because water is also an important expense for the brewery. Then doing restrictions would also help save the brewery money. For example, it would take about five liters of water to make one liter of larger beer.

But rainwater can be very dirty, so how can they solve this problem?

They have worked on rainwater collection systems that can filter the water so that it is safe to drink and make beer.

Customers always complain about the unpleasant bitterness of some beers, characterized by an unrefined taste and a rough bitterness. What causes these problems? Ingredients and brewing techniques.

1.Ingredients

A.The alkalinity, hardness, Ca, Mg, Mn and CO2 content of the brewing water is too high.
B. The quality of hops is too poor. Hops that have been stored for a long time have aged, or the origin of hops is not good.
C. The malt quality is too poor. For example, the malt shell is rough, contains a lot of protein, etc., or the roasting temperature is too high (roasted malt).

Brewing technology

2.Saccharification technology.

Too long time for saccharification and wort extraction, so that too much fatty acid, etc. enters the wort; wort is not clear after extraction; wort is severely oxidized during mixing, etc.; use of final addition of water for the next saccharification.
B. Fermentation and maturation techniques. Hot break and cold break were not well separated; tubes were moldy; ripening temperature was too high and many yeasts entered the ripening tank; higher alcohol and lipids were produced during fermentation.