[zb]
anorak:
They add/subtract the relevant minerals to make the water the same
I worked for a brewery for over 3 years and spent some time helping with the brewing process, wanna know what the secret is? PH levels. I remember the head brewer adding some powder to replicate the water from Burton Upon Trent, I cant remember what he added and at what point but I’d imagine it would be either pre mashing in or at the wort stage.