Single Step BIAB vs Step Mash for brewing a 1Gal Pale Ale

Discussion in 'Homebrewing' started by kunalv, Sep 26, 2020.

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  1. kunalv

    kunalv Initiate (111) Aug 27, 2020

    Hello guys, as the title suggests, I am ready to brew a 1Gal BIAB batch of Pale Ale. Recipe is as follows :-

    PA 2-row : 80%
    Munich : 6.7%
    Crystal 60L : 6.7%
    Dextrine : 6.7%
    Magnum : 3.5g @60
    Centennial : 5.5g @15
    Centennial : 6g @0
    Cascade : 8g dry hop for 5 days
    Citra : 8g dry hop for 5 days
    Yeast : S-04

    OG : 1.06, IBU : 38.5

    I was wondering if you guys could suggest the mash method here. I have been reading about this and can't seem to decide as the opinion on this is quite divided. The recipe calls for 1.2g mash with 0.2g of 'pour hot water over the bag' sparge. Can't I just go for a 1.5g single step mash? I will ensure I meet my Pre-boil volume.

    Also, this is the first time I am using Dextrine. So would like to know if you follow the same approach as with other malts.

    Feel free to suggest any modifications in the recipe. Thanks :slight_smile:
     
  2. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    The recipe is not talking about a step mash per se. It's calling for a single infusion mash, followed by a crude fly sparge.

    If well executed (i.e. evenly poured through the entire grain bed), this kind of fly sparge can increase your mash efficiency compared with a full volume mash with no sparge. If not well executed (e.g. if the sparge water "channels" through a small portion of the grain bed), it can actually decrease your mash efficiency compared to a full volume mash with no sparge.

    Ultimately, it's your choice to try it or not.

    Regarding Dextrine (or Dextrin) Malt (e.g. carapils or similar malt), yes, you mash it along with the other malts.
     
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  3. kunalv

    kunalv Initiate (111) Aug 27, 2020

    Got it! Might just skip the fly sparge altogether.
     
  4. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    Since you are brewing a small batch an easy way to fly sparge is to place your bag in a colander which straddles a similarly sized pot and slowly pour the sparge water over the grains. This an easy thing to do. Entirely up to you whether you want to make the effort.

    Cheers!
     
  5. HerbMeowing

    HerbMeowing Maven (1,295) Nov 10, 2010 Virginia
    Trader

    better efficiency and higher OG more likely with a 0.2G sparge rather than going for total boil volume of 1.4G in one step ...
     
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  6. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    I like the simplicity of a full volume single infusion mash with a single vessel BIAB system. If you have good temp control (e.g., an electric system) you can do step mash, but the need is not really there IMO. As for the need to do some sort of sparge, I never have, with BIAB. A good grain crush and a good squeeze of the bag after the mash will get you decent efficiency (I get about 70% for 2.5 gallon batches). I do recommend getting a pair of these or similar to protect your skin if you are squeezing the bag.
     
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  7. riptorn

    riptorn Pooh-Bah (1,776) Apr 26, 2018 Georgia
    BA4LYFE Society Pooh-Bah Trader

    I was wondering what the squeezers recommend.
    A guy I knew years ago from Ohio used to wash his vehicles, in the dead of winter. He'd put on some cheap, brown cotton jersey gloves for insulation, and pull some yellow dishwashing gloves over them. Seems that would work for a bit of added protection from heat, too.
     
    #7 riptorn, Sep 30, 2020
    Last edited: Sep 30, 2020
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  8. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    The thermal insulation on the Blichmann gloves is sufficient for mash temps, but things can get warm. I wouldn't rely on them for burn protection at temps much higher than that.
     
  9. kunalv

    kunalv Initiate (111) Aug 27, 2020

    Guys I use a pair of Silicone gloves for handling the bag.

    I have one major query now, not sure if I should start its own thread. How do I calculate the salt additions if I don't know the water quality? I am using branded Bottled Water here, since I only do small 1 Gallon batches. They do not provide any water quality reports. Only thing mentioned on the bottle is it contains 0.2mg Magnesium & 0.1mg Potassium per 100ml.

    This is Ozonised Packaged Drinking Water. Ingredients include Ozonated water, 'Minerals', Magnesium Sulfate & Potassium Bicarbonate.

    That;s it. No other information has been provided. How do I adjust mash pH?
     
  10. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    If using bottled water, use distilled. Then you are starting with essentially no mineral content. Then use a water adjustment calculator to figure out how much of each salt you want to add. These programs can also be used to estimate your need to add acid for pH adjustment. I don't use a pH meter in my brewhouse so rely on the estimate, and still manage to make beer. Two calculators I have used are
    https://www.brunwater.com/
    https://www.brewersfriend.com/mash-chemistry-and-brewing-water-calculator/
     
  11. kunalv

    kunalv Initiate (111) Aug 27, 2020

    Sadly distilled water for this purpose would be too expensive. The next best option we have is to use this Ozonated Packaged Drinking water.

    My problem isn't using the calculators, it actually is about how you arrive at a base water profile after mashing in the grains. Was thinking of the following way of doing this, don't know if it's correct, but here goes :-

    1. Heat water(packaged..same as described above) to strike temp. Dough in the grains.
    2. Let the grains sit for 5-10 mins and then remove a sample of the water and strain it from the grains so you only have a sample of the mash water.
    3. Check it's ph and add small amounts of salts to reach desired pH.
    4. Extrapolate the quantity of salts for the entire kettle volume and add the salts.

    I know this feels weird and complicated. But how else can I do it?
     
  12. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    I can buy a gallon of distilled water for less than a buck at Walmart. Is that too expensive for you?

    Cheers!
     
  13. kunalv

    kunalv Initiate (111) Aug 27, 2020

    It wouldn't had I been in the US :slight_smile:

    Here in India, 10 litres of distilled water would cost around 4 dollars. For the same amount of branded packaged drinking water, I would pay less than half.
     
  14. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    Well, that is less than fortunate.

    Best of luck with your 4 step process you outlined in post #11. I doubt that I could achieve here but perhaps you may have better luck in this regard.

    As regards water and mineral salts, while achieving a proper mash pH is important folks will also consider the beer style and appropriate water profile for that beer style while building their brewing water.

    Again, best of luck here.

    Cheers!
     
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  15. MrOH

    MrOH Grand Pooh-Bah (3,995) Jul 5, 2010 Virginia
    BA4LYFE Society Pooh-Bah

    I'd say your best bet might be to just try out that water as is, and then if you the need to make adjustments, go from there. Mineral profile is key to locking down a specific style, but you'll still make a drinkable beer even if things aren't ideal (provided you don't have too much metal dissolved in the water!) Keep in mind that sulfate will make it more crisp, carbonate will lessen acidity, and chloride will round things out.

    Water is usually the last thing US homebrewers address within their systems.
     
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  16. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    You could check with the company that bottles they water you will use to see if the can share chemistry information. Perhaps they could provide their tolerance range for different ions. Or you could get water tested, but that will probably cost more than buting distilled.
     
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