This is all a bit academic because the f'n wort is already chilling, but anyways:
Let's say you chuck in what you think is 20 AAU or so of 4.5% alpha hops for a 60 minute boil. After fifteen minutes or so, you realise that they're actually 7.8% alpha, and your wort is on its way to being massively overbittered.
You quickly run the calcs and realise that the 20 mins they've been in there is enough to extract the 20 AAU you were after. If you removed the hops at this point (say you were using a sock for pellets), then boiled for the remaining 40 minutes to get your evap loss / target OG, would the IBU outcome be the same?
Let's say you chuck in what you think is 20 AAU or so of 4.5% alpha hops for a 60 minute boil. After fifteen minutes or so, you realise that they're actually 7.8% alpha, and your wort is on its way to being massively overbittered.
You quickly run the calcs and realise that the 20 mins they've been in there is enough to extract the 20 AAU you were after. If you removed the hops at this point (say you were using a sock for pellets), then boiled for the remaining 40 minutes to get your evap loss / target OG, would the IBU outcome be the same?