I'm looking to halve a recipe from a book that i've got. Essentially I don't have the capacity to do a full batch and just want to squeeze a half-batch in. I'm just trying to figure out how to correctly halve everything? I'm assuming that grist and hops will all get halved, but the water...

good evening everyone was wondering if anyone has a recipie for a roosters Yorkshire pale ale ? . It’s a favourite of mine but Is never on tap round my way anymore so I’m taking up all grain brewing to hopefully make something similar :)