It is possible that beer does not do much or is not worthwhile enough to put much effort into. I am just experimenting with different things with the garden. I do make compost, but I never seem to have enough for my needs.
Compost usually is a near prefect fertilizer, but since it takes so long to make, I end up using manure in its place and have to purchase other soil amendments if I want to add trace minerals.
I do brew kombucha, but that makes more of a vinegary brew, so I do not know if it would work?
Anyway, maybe it wasn't such a great idea.