Brew calculations off

Discussion in 'Brew Sessions' started by TWS, Oct 11, 2016.

  1. TWS

    TWS New Member

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    Just did a brew (Nut Brown Ale) which the recipe calculated a 1.022 OG and I got a 1.048. The originator of the recipe indicated a 1.044 which tracks what I got. Why is the recipe calculator so far off?

    Amount Fermentable PPG °L Bill %
    7.5 lb United Kingdom - Maris Otter Pale 38 3.75 88.2%
    0.25 lb United Kingdom - Chocolate 34 425 2.9%
    0.25 lb American - Caramel / Crystal 120L 33 120 2.9%
    0.25 lb Belgian - Biscuit 35 23 2.9%
    0.25 lb American - Special Roast 33 50 2.9%
    8.5 lb Total
    Hops
    Amount Variety Type AA Use Time IBU
    1 oz Fuggles Pellet 5 Boil 60 min 23.08
     
  2. Ozarks Mountain Brew

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    what is your recipe editor efficiency set at like ": 72% (ending kettle)"
    I have this same recipe at 72% and use 10 pounds of MO and the OG is 1.054
     
  3. TWS

    TWS New Member

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    Equipment profile is set at the recommended 70%
     
  4. Ozarks Mountain Brew

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    I changed mine to your efficiency and changed the grain amount and still get 1.041
     
  5. Ozarks Mountain Brew

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    recipe efficiency can be changed, is it at 70% in the edit recipe
     
  6. TWS

    TWS New Member

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    Ah, therein lies the culprit. Recipe efficiency set at 35. Moved to 70 and voila! now OG is 1.045. Much obliged for the attention to my question.
     
  7. Ozarks Mountain Brew

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    when you do extract it defaults steeping grains to 35% , so if you start in extract then change to all grain it stays at 35%
     
  8. TWS

    TWS New Member

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    Been working with my other recipes. The efficiency varies widely among my three most recent BIABs. Is this typical?

    English Brown Partial Mash 60
    Irish Dry Stout BIAB 50
    Nut Brown BIAB 75
     
  9. Trialben

    Trialben Well-Known Member

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    Hay TWS there seems to be a lot of variables when it comes to mash efficiency. Eg Sparge volume, mash volume, mash temperature, mash length, type of grain ect. At first my efficiency was a bit staggered but it will eventually even out or so that seems to be the case with my BIAB experience. Good luck and happy brewing to ya
     

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