Our abbey beer is brewed and bottled in Belgium by our sixth-generation family brewer. During our abbey beer brewing process, we use three different yeasts, one of which is the original Jerumanus yeast strain from the Sint Stefanus Monastery itself. This yeast strain, combined with the brewing process that was entrusted to the brewery by the monks of Sint Stefanus, gives our beer its distinctive flavour.
The Purest BeginningIn the first step of our abbey beer brewing process, the brewery draws ground water from three sources, which is then purified to remove any traces of iron. We then add sulphates to the water to bring out the flavour of the hops. This process, known as Burtonisation, helps to create the best chemistry for brewing high fermented beers. From this liquid, we brew our abbey beer with three malts, as well as with a little liquid sugar in the classic Trappist style.
Initial FermentationDuring the initial fermentation cycle, yeast is added regularly to keep the fermentation fresh and vigorous. At the end of the fermentation, the beer is not pasteurised. Some yeast is removed before the beer goes into its first period of maturation - storage for four weeks at 2°. It's rare for high fermentation ale to be matured in this way, and is an important step in the abbey beer brewing process. The beer conditions, the yeast gradually lies dormant and is then eventually filtered out.
BottlingNext, the temperature is raised to create the right environment for the addition of the two secondary yeasts. The beer is then bottled and the yeasts are added, along with a dash of hot water and some sugar. The water causes the beer to foam, ridding the bottle of any unwanted oxygen before it is capped.
Cellaring and StorageThe bottles are then stored at 21° for two weeks, allowing the secondary fermentation to begin. Once the bottles are removed from the refermentation room, they are stored at cellar temperature for a minimum of three months to develop the distinctive flavour. The beer continues to mature in the bottle until it's opened, allowing you to choose how you want your beer to taste.