I generally cool to 180 or so before throwing these hops in, and then the wort is still cooling a bit on its own..... maybe down to 140-150 over the 30 minutes. Every 5-10 minutes I swirl the wort with my immersion chiller to kind of distribute the hops in the wort again and get maximum contact.
If you throw in at 0 minutes, wort is at 212 and some of the hop oils will basically "boil off" quickly at those temps. Chilling a bit allows the flavor and aroma of the hops to come through better..... at least that is the theory I believe.
If you throw in at 0 minutes, wort is at 212 and some of the hop oils will basically "boil off" quickly at those temps. Chilling a bit allows the flavor and aroma of the hops to come through better..... at least that is the theory I believe.