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Newbie Q. BIAB in a 19L pot.

Discussion in 'General Brewing Techniques' started by Adamdrinksbeer, 13/10/18 at 5:14 AM.

 

  1. Adamdrinksbeer

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    Posted 13/10/18 at 5:14 AM
    I'm wanting to do an all grain BIAB American pale ale in a 19L Big W pot. I see some people "top up" with water after the boil in their fermentor to their desired batch volume. Doesn't this just make weak watery weak beer? How do I know how much top up water is too much?

    This will be my second BIAB. The first was a successful small batch 5L but now I've got my hands on a Fermentasaurus I want to make bigger batches.

    Any help much appreciated
     
  2. Adamdrinksbeer

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    Posted 13/10/18 at 5:27 AM
    Forgot to mention I'd like to make about 20L. Possible?
     
  3. chesl73

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    Posted 13/10/18 at 11:07 PM
    You can't make 20L in a 19L pot. I up until recently was using the same pot using full volume BIAB. I wasn't topping up and I don't like the idea of a you say watering down. I was only managing batch sizes of 10L or so. I've just bought a Guten brewing system because I'd had enough of the stove top messing around and the small batches.
     
  4. Adamdrinksbeer

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    Posted 13/10/18 at 11:20 PM
    Hmm. That sucks. I keep finding more recipes and guides where people "top up".

    This method is called partial BIAB right?
     
  5. Simon N

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    Posted 13/10/18 at 11:54 PM
    There are ways you can get a larger batch size. High gravity brewing (where you water down - online calculators available to determine how much to add and impact on gravity). Or you could do a batch sparge in a second pot/container then add that wort back into your 19l pot
     
  6. Adamdrinksbeer

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    Posted 13/10/18 at 11:59 PM
    Thanks Simon N. With the batch sparge am I right in thinking I'd still be limited to about 17L wort (to leave headspace for the boil) and then what ever I'd loose in evaporation during the boil?
     
  7. Simon N

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    Posted 14/10/18 at 12:41 AM
    Yup, and even 17 might be pushing it due to 4% increase in volume at boiling temp
     
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  8. Adamdrinksbeer

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    Posted 14/10/18 at 12:46 AM
    Hmm maybe time for a kettle upgrade.
     
  9. Simon N

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    Posted 14/10/18 at 12:50 AM
    Or brew more often!
     
  10. chesl73

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    Posted 14/10/18 at 12:51 AM
    Yes, i think you accept the situation with the 19L pot or you buy a bigger pot.
     

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