2. Milling

Malted Barley is fed into the GUINNESS® brew house mills which crush the grain, releasing the inner starch and flour, and leaving the outer barley husk material as intact as possible. Once the grain has been milled it is referred to as 'grist' and is passed into a grist case where it collects ready for the next stage. The phrase 'grist for the mill' has its origins here.