The Double Drop Process
The wort from the copper is collected or "dropped" into a specially designed vessel called a "round" (a large shallow vessel that is positioned high in the roof space of the brewery) where the yeast is added or "pitched". The yeast will start to react with the sugars contained in the wort and multiply. This first stage of the fermentation takes 12-16 hours and will form a foam on top we call "rocky heads".
Once the "rocky heads" have formed, the fermenting wort is "dropped" using gravity from the "round" into the fermenting vessel below, this will leave behind any dead yeast cells and other debris (gik) created during the brewing process. The fermentation continues for a few more days with the fresh and clean yeast created at the start of the brew.
Flack's Double Drop bitter is produced by this method, the wort is "dropped" from the copper to the round and then "dropped" from the round into the fermenting vessel. We hope you will recognise the advantages of using this traditional method by sampling and enjoying the unique characteristics of Flack's Double Drop.