This works good for bittering hops where there's little flavor contribution other than bitterness. If you're using hops that have a target flavor rather than bitterness, you'll lose a lot of the flavoring if you boil them longer than recommended. Longer boiling leaves behind the Alpha Acids, but may evaporate the oils that give a particular flavoring hop its character. This is one of the reasons that Warrior is really good for bittering. It has little other flavoring, unless used in large quantities, and may make a batch taste like grass clippings if too much is used with insufficient boil time. Warrior has something like 16 AA, so a little dab'll do ya. But, don't take my word for gospel. Some hops don't mind a long boil at all, and may actually get better. Kinda have to know the hops before using FWH. It is a VERY convenient method, though. No clock racing at all doing that. I think Ben (
@Trialben) talked me into FWH on a batch. That takes a lot of the clock watching out of the picture, especially with a single hop recipe.