Brewtarget's IBU count way off compared to Promash

[PhillyBrewer]

I've used Promash for years, but recently downloaded Brewtarget because it's free and has sorghum as an ingredient. I created a recipe for a 2.5 gallon 1.056 batch and noticed the IBUs were really high. I decided to put the same hop bill into Promash and the IBUs were roughly half of what Brewtarget showed (I'm assuming 0.89 IBU/GU = 89 IBU in Brewtarget vs 48 IBU in Promash). I confirmed both applications are using the Rager formula.





Am I missing something?

[NateBrews]

I think you are reading it wrong. The Bitterness is listed in the top one as 50.2 IBU and the Promash one is 48.1. I don't think you would notice the difference between those, so the difference is probably irrelevant.

The IBU/GU is IBUs divided by gravity points, so 50.2/56 (= 0.8964).

[PhillyBrewer]

Doh! Thanks.

[brewinhard]

Thank God for Nate! He is our new savior.

Love this forum!

[PhillyBrewer]

Thank God for Nate! He is our new savior.

Love this forum!

Hey brewinhard! Hope all is well!

[brewinhard]

Thank God for Nate! He is our new savior.

Love this forum!

Hey brewinhard! Hope all is well!

Hey there back at ya! Good to see you back on here again. It has been a while!