OG and IBU significantly different from posted recipe

Discussion in 'Recipe Editor' started by jbedell2, Aug 11, 2015.

  1. jbedell2

    jbedell2 New Member

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    I've checked all the things I can think of, but I'm still getting a significant difference in OG and IBU between a recipe posted on HBT and the one I've entered in BF. OG should be 1.077 and I'm getting 1.083, and IBU's should be 36 and I'm getting 47. What's especially strange is that I have efficiency set to 70% and the recipe is listed at 75%, which I would think would make my numbers lower, not higher. Here are the two recipes:

    HBT Version:

    Recipe Type: All Grain
    Yeast: Safale-05
    Yeast Starter: Nah
    Batch Size (Gallons): 5
    Original Gravity: 1.077
    Final Gravity: 1.015
    IBU: 36
    Boiling Time (Minutes): 60
    Color: 17
    Primary Fermentation (# of Days & Temp): 3 weeks
    Tasting Notes: Complex malt and nicely blended spices and hop aroma

    Mash Efficiency: 75.0 %
    Fermentation Temperature: 64 degF

    Fermentables
    US 2-Row Malt 13lb 0oz (84.1 %) In Mash/Steeped
    UK Medium Crystal 8.00 oz (3.2 %) In Mash/Steeped
    Belgian Special B 8.00 oz (3.2 %) In Mash/Steeped
    German Wheat Malt 4.00 oz (1.6 %) In Mash/Steeped
    US Chocolate Malt (350L) 3.20 oz (1.3 %) In Mash/Steeped
    Sugar - Honey 1lb 0oz (6.5 %) End Of Boil

    Hops
    US Centennial (9.4 % alpha) 1.00 oz Bagged Whole Hops used 60 Min From End
    US Centennial (9.4 % alpha) 0.50 oz Bagged Whole Hops used 30 Min From End
    US Centennial (9.4 % alpha) 0.50 oz Bagged Whole Hops used 5 Min From End

    Other Ingredients
    Irish Moss 0.01 oz used In Boil
    Vanilla Beans 1
    Orange Peel, Bitter 1 Tbs
    Cinnamon Stick 1
    Ginger Root 1Tbs (dehydrated or fresh)

    Single Step Infusion (67C/152F)


    And my BF Version:

    HOME BREW RECIPE:
    Title: Holly - Christmas Ale
    Author: jmo88 - HBT

    Brew Method: BIAB
    Style Name: American Brown Ale
    Boil Time: 60 min
    Batch Size: 5 gallons (fermentor volume)
    Boil Size: 6.2 gallons
    Boil Gravity: 1.060
    Efficiency: 70% (brew house)

    STATS:
    Original Gravity: 1.083
    Final Gravity: 1.015
    ABV (standard): 8.92%
    IBU (tinseth): 46.93
    SRM (morey): 17.66

    FERMENTABLES:
    13 lb - American - Pale 2-Row (84.1%)
    0.5 lb - United Kingdom - Crystal 60L (3.2%)
    0.5 lb - Belgian - Special B (3.2%)
    0.25 lb - German - Wheat Malt (1.6%)
    3.2 oz - American - Chocolate (1.3%)
    1 lb - Honey - (late addition) (6.5%)

    HOPS:
    1 oz - Centennial, Type: Leaf/Whole, AA: 10, Use: Boil for 60 min, IBU: 31.63
    0.5 oz - Centennial, Type: Leaf/Whole, AA: 10, Use: Boil for 30 min, IBU: 12.15
    0.5 oz - Centennial, Type: Leaf/Whole, AA: 10, Use: Boil for 5 min, IBU: 3.15

    MASH GUIDELINES:
    1) Infusion, Temp: 152 F, Time: 60 min

    OTHER INGREDIENTS:
    0.01 oz - Irish Moss, Time: 15 min, Type: Fining, Use: Boil
    1 each - Vanilla Bean, Type: Spice, Use: Bottling
    1 tbsp - Orange Peel, Bitter, Type: Spice, Use: Bottling
    1 each - Cinnamon Stick, Type: Spice, Use: Bottling
    1 tbsp - Ginger Root, Type: Spice, Use: Bottling

    YEAST:
    Fermentis / Safale - American Ale Yeast US-05
    Starter: No
    Form: Dry
    Attenuation (avg): 81%
    Flocculation: Medium
    Optimum Temp: 54 - 77 F
    Fermentation Temp: 64 F


    I understand there can be small differences, but these values seem significantly off. Thanks for any insight anyone can offer.
     
  2. Ozarks Mountain Brew

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    have you set up your general/equipment settings correct with correct losses and pot size?, what are your water levels?
     
  3. jbedell2

    jbedell2 New Member

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    Thanks for the response. I have my equipment settings pretty well dialed-in. I haven't ever messed with any Water Chemistry settings - I always just leave that alone. Here's the Quick Water Requirements screen:

    Water Gallons Quarts
    Total mash water needed 7.1 28.4
    Grain absorption losses -0.98 -3.9
    Starting boil volume 6.12 24.5
    Volume increase from sugar/extract (late additions) 0.08 0.3
    Boil off losses -1 -4
    Kettle dead space -0.13 -0.5
    Hops absorption losses -0.08 -0.3
    Amount going into fermentor 5 20
    Total: 7.1 28.4
     
  4. Ozarks Mountain Brew

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    I will note that I've found that a lot of people using other software and posting a recipe do not match what shows up here, so I when I find something I like I change the recipe to account for my system but keep the IBU, Original, Final gravity and Color as close as I can, and use my efficiency not theirs. The real issue is that nobody's system is the same and other software shows different results. So I should say that what you’re trying to do is normal
     
  5. jbedell2

    jbedell2 New Member

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    Thanks for the response. I might just try targeting 5.5 gals into the fermentor instead of 5, since that should get me close to all of the numbers in the original recipe.
     

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