Brewtarget 2.3.0 First Wort Hops

[Wyrmwood]

The github thread on this issue with First Wort Hops is closed,
https://github.com/Brewtarget/brewtarget/issues/177

There seems to be some confusion about when or if this issue is fixed. According to the thread, it's fixed in 2.3.1, but on the download page,
http://www.brewtarget.org/download.html
the most recent version is 2.3.0 for Windows or Linux.

I can confirm, with 2.3.0, this problem still exists,
Here's the IBU calc with boil hops

With first wort for the same quantities, the IBU's are off by a factor of 1000. I'm guessing this should be an IBU of ~40, but it's 4019.

 

[pricelessbrewing]

It's an issue with the default value, but you can adjust it. As far as I can tell, it's just a coefficient or percentage with respect to a 60 minute boil. So a value of 100 for first wort will be equal to the ibus for a 60 minute boil addition. The default value is 100x100, probably incorrectly stored as a number when they thought it was a percent. Change that option and it behaves as you expect.

 

[Wyrmwood]

It's an issue with the default value, but you can adjust it. ...

How? The only thing I've found is dividing the alpha acid by 100. For example, instead of 6.2%, 0.062.

 

[pricelessbrewing]

The setting is in

Tools / Options, formulas / IBU adjustments. Default value is 10,000.000. Change it to 100

 

[Wyrmwood]

Perfect, thanks!