I was wondering if your going to keg your brew and the recipe calls to use lactose.. Should i use it or would that only be for bottling. The brew in question is a imperial stout. Thanks
Lactose is an unfermentable sugar that is generally added during the later part of the boil. You can add it after fermentation in order to sweeten to tastes ("back sweeten").
I added it. I made Cheesefoods Vanilla Caramel, kegged it with the lactose addition to the keg prior to the transfer. No problems for me. Still sweet and almost kicked.