another thing ive wondered about is the ibu calculated with beersmith. how accurate is the ibu given you cant set up the recipe for continuously hoppped wort with beersmith.
It's not accurate. You can calculate with the bittering hops, adding half of them at 60 minutes and the rest at maybe 40 minutes into Beersmith, and sort of guestimate that way. The flavor hops are added continuously from 35-0, so the software isn't helpful in determining that. One guy I know just input .15 sized additions every 5 minutes, or whatever the size was to use up the simcoe/amarillo hops because he wanted to have a better grasp of the IBUs but I never really cared all that much. I like the beer, and it tastes pretty good regardless of what the actual IBUs are, so I never worried about it. I do add at least 1/2 of the bittering hops at 60 minutes, so there is a firm bitterness behind it to balance it but otherwise I don't concern myself too much with it.