Der Fuchs
Well-Known Member
Yeah, obviously half an hour in the car is silly, but now I do wonder about periods as short as 2 weeks.
I would say it depends mostly on the hop varietal. Some hops fade fast (crystal, citra, mosaic, etc) and some last longer (cascade, simcoe, hallertau).
This is obviously one of many factors, but in my experience this is the biggest factor.