I was thinking about ways to back sweeten and thought of using FAJC and vodka to sterilize it. Anyway I was wondering if anyone here has tried this and if it would work? Either this or another way to back sweeten.
I do know this is a 15 gallon keg which isn't great. Like you were saying a lot of head space.
How would I depressurize it though? I looked up how to take the spear out and that seems pretty straight forward.