Whirlpool hops do add to bitterness. The warmer you add them, and the longer you whirlpool the more bitterness they will provide.
As @brew_cat said, chill the wort to below 175°-170° as it will provide more oils and not isomerize the AA.
Whirlpool hops do add to bitterness. The warmer you add them, and the longer you whirlpool the more bitterness they will provide.
As @brew_cat said, chill the wort to below 175°-170° as it will provide more oils and not isomerize the AA.