I kegged a kolsch about 3 weeks ago that was supposed to be around 24 IBUs (.75oz of German Perle for 21 IBUs and .5oz Czech Saaz for 4 IBUs). Right after I kegged the beer I noticed that I only used .25oz of Perle, which equates to around 11 total IBUs. I have since used the remaining .75oz of Perle for another batch, however, I have plenty of other hops available.
What would be the best way to make up for the missing 13ish IBUs?
What would be the best way to make up for the missing 13ish IBUs?