Looking to make a Russian Imperial Stout recipe but I don't have access to challenger hops. Would either Northern Brewer or Pearle hops be a good substitute for Challenger? If both, which might be better?
AT 60 minutes, the challenger addition won't be providing much if any flavor or aroma to the beer. I would substitute perle or northern brewer freely in place of the challenger for that recipe, with little to no change in the final product.