jwalker1140
Well-Known Member
I understand you get to volume quickly but for those that may reach a boil prior to reaching full volume the implications may be worth considering.
As wort gravity increases Hop utilization decreases.
Additionally, adding cool wort to the now boiling wort, cooling it periodically, further reduces Hop utilization.
It seems feasible that if you encourage a race to the boil that some systems will achieve it prior to reaching full volume.
Ten or twenty points in gravity and ten minutes at less than boiling temperatures over a 60 minute boil could impact the IBU's to the point of being noticeable.
Not all brewing systems are the same.
I've never heard of batch sparging being done the way you describe. I don't add bittering hops until after I've collected my full volume and until after it's come to a boil so this would never be a problem for me.