Beersmith - Moving extract effects IBU?

[bushizell]

Hey guys,

I just moved my LME for a Celebration Ale clone to post boil, while still keeping the 1.5lb of DME at the beginning and the IBUs jumped from 61->140??? Can anyone explain to me why that is? Thanks!

 

[day_trippr]

Without knowing volume, LME weight, etc, the presumption is BS2 saw a rather large reduction in boil gravity with the resulting higher AA extract efficiency and calculated the IBUs accordingly...

Cheers!

 

[bushizell]

Without knowing volume, LME weight, etc, the presumption is BS2 saw a rather large reduction in boil gravity with the resulting higher AA extract efficiency and calculated the IBUs accordingly...

Cheers!

Perfect! Thank you.