Reducing batch size with same amount of ingridients

Discussion in 'Beginners Brewing Forum' started by wscarpenter, Oct 20, 2018.

  1. wscarpenter

    wscarpenter New Member

    Joined:
    Oct 19, 2018
    Messages:
    8
    Likes Received:
    5
    Trophy Points:
    3
    Location:
    Omak, Washington
    Perhaps this is a dumb question or the answer is obvious... but here goes.... if I am brewing a recipe for a ending batch size of 5 gallons and I reduce the ending ratio to 4.5 gallons, but keep the same amount of ingredients. What affect could this have on my beer? Would it just be abv increase and hop potency? Or are there other factors that come into play?
     
  2. philjohnwilliams

    philjohnwilliams Well-Known Member

    Joined:
    Aug 26, 2012
    Messages:
    324
    Likes Received:
    426
    Trophy Points:
    63
    Location:
    Verdun, quebec
    You will pretty much just wind up with a stronger (both in ABV and flavour) version of the original beer. From 5 to 4.5 gallons should give you about .5% increase in ABV, while the slight increase in wort OG will lead to a small decrease in hop bitterness.
     
  3. wscarpenter

    wscarpenter New Member

    Joined:
    Oct 19, 2018
    Messages:
    8
    Likes Received:
    5
    Trophy Points:
    3
    Location:
    Omak, Washington
    So would you recommend increasing the bittering hops?
     
  4. philjohnwilliams

    philjohnwilliams Well-Known Member

    Joined:
    Aug 26, 2012
    Messages:
    324
    Likes Received:
    426
    Trophy Points:
    63
    Location:
    Verdun, quebec
    Theoretically yes, but what I hadn't considered from your question was that along with the increase in OG came a decrease in volume. It is possible that the two factors will cancel each other out. The IBU calculator here could probably answer your question better than I can.
     
  5. wscarpenter

    wscarpenter New Member

    Joined:
    Oct 19, 2018
    Messages:
    8
    Likes Received:
    5
    Trophy Points:
    3
    Location:
    Omak, Washington
    I’ll give it a try. Still navigating the site a little bit. Thanks for the input.
     
  6. J A

    J A Well-Known Member

    Joined:
    Jan 19, 2016
    Messages:
    3,476
    Likes Received:
    2,694
    Trophy Points:
    113
    Location:
    Austin, Texas
    Plug your ingredients into the recipe calculator and make the changes you intend to make with the batch size. It'll tell you exactly what to expect.
    If you have a hard time figuring it out, list your ingredients and someone can arrange it in the editor and share a link for you to see.
     
  7. Nosybear

    Nosybear Well-Known Member

    Joined:
    Jul 16, 2012
    Messages:
    9,418
    Likes Received:
    6,673
    Trophy Points:
    113
    Location:
    Aurora, CO, USA
    Simple proportions. Everything increases by 5/4.5.
     

Share This Page

arrow_white