Beersmith setup making FG and IBU way off?

[GrumpyOldGit]

Could just be I'm a total noob on this, but I'm trying to replicate a Breiss recipe (One Mighty Fine Barleywine) and I just cannot get the numbers to match.

Basic outline is:

• Add 3G to the kettle, bring to 152F & steep 2 lb of grains for 30 mins
• Remove grains, add 12lb of Light DME, bring to boil
• 1oz, 3oz, 1oz of Amarillo (8.5%) for 60/30/10 min
• Cool, transfer, top up to 5G, add yeast, etc....

According to Briess this should be 1.105 OG with 90 IBU.
Beersmith 2 gives me 1.085 and 40.8 so something is off.
I checked Brewer's Friend and they give ~80.

My first guess is my equipment profile is off, but beyond that I can't really work out exactly what is wrong despite several attempts to manipulate the profile and get closer numbers and so my call out to you all...

I've attached screenshots of my Beersmith setup - hopefully this is an obvious fix for someone out there. The 3rd shot is the BF screen.

 

[Ruint]

Don't know if this is the correct answer or not, but you might want to delete that and try again with adding a new recipe. I took the grain bill and added it into a new recipe with beersmith and I come out with an estimated OG of 1.115 if using it in a partial mash profile, and if I go with an extract style, I still come up to 1.107 OG...fwiw....

 

[Oginme]

Munich malt needs to be converted, so you need to brew this as a partial mash. Running this as an extract recipe, BeerSmith uses the extraction for 'steeping grains' which is much lower extraction than you would get from mashing the grains.

 

[raysmithtx]

From the screen shot it shows Imperial gallons. Is the original recipe for U.S. Gallons? If so then your volume is about 20% higher so the projected OG is about 20% lower. Not all of the problem but it might help you get closer.

 

[Ruint]

you can also use the grains to steep if you want, but you will need to pick them all from the "crystal" or "cara" family...i.e. Cara-Munich 20L, and the caramel crystal malt 40L...they are acceptable grains to steep.

 

[GrumpyOldGit]

Well, dumb-ass here finally got it sorted. After correcting to the appropriate volume units (thanks, RaySmithTX) and re-entering the data (thanks, Ruint) I got the OG lined up to 1.107 with extract.

As for the IBU - well that was my rookie mistake and forgetting the effect of high gravity wort on hop isomerization. I was adding all 12lb of DME up front and that was killing the IBUs. So, use 3lb at the start then add the remaining 9lb 5 mins from flameout for pasteurization and bingo - IBU nearly 100.

 

[pricelessbrewing]

Just to mess with you more, realistically you're not going to get anymore than 75-85 IBU from traditional methods (ie. excluding hop shots, iso-alpha acid concentrates, or similar product) due to solubility limitations which are not accounted for with IBU formulas.