I've recently tried extract brewing after all grain brewing. Strange I know, but I wanted to eliminate the mash part of the process to see if it help get rid of a off flavour (it did but that will be another question).
I did a small batch so I boiled the whole batch, but I see in most recipes they tell you to do a small amount then add cold water before fermenting.
This baffles me. Everything I read about brewing stresses the importance of sanitation, including not getting anything unsanitised into contact with the post-boil brew, including cold water. The existence of no-rinse sanitiser shows how important this is.
So how is it that I am now being asked to add a whole load of cold water to the post-boil wort?