So I've got an IPA that I kegged about a month ago (I don't usually drink slowly, but I've got a Blonde on the other tap that I've been favoring) and I've noticed that now almost all of the hop flavor and aroma that it had when I first kegged it is gone. There's about a third of the keg left and I was thinking about just tossing some cascade into a bag and dropping it in there, but I don't know how long it would take to pick up the flavor when it's cold. Would it even be worth it or should I just choke down the bitter malty brew as it stands now and drink faster next time?