The ingredients to brew our beers

Basic ingredients

Water, malt, hops and yeast are the 4 basic ingredients to brew beer. We would like to explain you how we get these basic ingredients.


During the brewing process we use water for malting, brewing and boiling beer. After this process, we purify the waste water via our own installation until we attain the quality of surface water. For example, we purify 1,700 cubic meters of water every week to meet the Flemish discharge standards.


We buy the malt from domestic and foreign malt houses. In this malt houses, the barely soaks in water to germinate at become malt. When choosing malt, we are very critical because the malt is very important for the colour, aroma and flavour of our beers.


The bitter taste of beer is due to the hop cones of the female hop plant. The hops for our beers comes from all over the world such as from Germany, the Czech Republic and the United States. We also often buy hop cones in our own country, more specifically in Poperinge.


Alcohol is only present in beer after the addition of yeast. Every beer has a specific taste depending on the type of yeast strain. We use three types of fermentation: high, spontaneous and mixed fermentation.


To give our beers a unique taste, we add sugar, spices, fruit or even liqueur to certain beers.

Of course, we are not revealing all our secrets, but we gladly share the next three ingredients with you:

Candy sugar

Candy sugar or brown sugar is not only a tasty addition to a pancake, but also in beer. For example, we add candy sugar to Kasteel Donker. This results in a sweet attack and contributes to the beautiful dark colour of our Kasteel Donker.


To give beers such as Kasteel Hoppy, Kasteel Tripel and Brigand a pronounced taste, we like to experiment with herbs. Cinnamon, clove and licorice are some examples of herbs that are frequently used in the entire brewing world.


Our range includes many refreshing fruit beers that are flavoured with cherries, peaches and raspberries. Of course, we think of our St-Louis fruit beers and Bacchus beers. But also the beautiful red colour of Kasteel Rouge is due to the addition of cherries.