Do you rinse your grains when mashing with BIAB?

SpargePervert · Jul 17, 2012

Can someone explain what the "dunk" method is? Where are you dunking? Surely dunking gives you no more as the grain has already been sitting in the liquor for ages during the mash?
I've done a handful of BIABs, all ~75% efficiency. I squeeze a bit and then rest the bag of grain in a large collander above the pot to drip a bit as I'm brining the wort to the boil.

thepartsmancometh · Jul 17, 2012

I mash in pot 1. Meanwhile I heat the BK with sparge water to 170 Ish. When mash is over I transfer the bag to the sparge water (and add hops to the liquor if I'm first wort hopping). I stir the grains well, and the pull the bag, let it drain etc. Dump mash pot contents into BK and boil.

JeffersonJ · Jul 17, 2012

SpargePervert said:
Can someone explain what the "dunk" method is? Where are you dunking? Surely dunking gives you no more as the grain has already been sitting in the liquor for ages during the mash?
I've done a handful of BIABs, all ~75% efficiency. I squeeze a bit and then rest the bag of grain in a large collander above the pot to drip a bit as I'm brining the wort to the boil.

The difference between the mash and the dunk sparge is the gravity or the wort. During your mash, your wort gravity will be pretty high by the end of the mash. When you dunk your grain bag in fresh water, your gravity is in the single digits even after the sparge.

Oddball · Jul 17, 2012

I recently found this podcast with Brad Smith (Beersmith) about BIAB. They basically state that if you are doing a full volume mash then you are sparging and mashing at the same time because all of the liquid is coming into contact with the grain. So basically they are only considering it a "no sparge" if you are adding some liquid that hasn't had contact with the grains. Pretty interesting interview....

http://grooveshark.com/#!/search/so...+Bag+(BIAB)+Down+Under+–+BeerSmith+Podcast+10

Mysticmead · Jul 17, 2012

SpargePervert said:
Can someone explain what the "dunk" method is? Where are you dunking? Surely dunking gives you no more as the grain has already been sitting in the liquor for ages during the mash?
I've done a handful of BIABs, all ~75% efficiency. I squeeze a bit and then rest the bag of grain in a large collander above the pot to drip a bit as I'm brining the wort to the boil.

if using a pot that won't allow for the full volume of water. mash with a portion of the water in one pot and the remaining in a second pot. after your mash place the grain bag in second pot. dunking like a tea bag (optional) or stirring.. let rest 10 minutes, remove and drain/squeeze

it is strictly there to rise the grains of any remaining sugar IF you can't do a full volume mash. It is yet another way to achieve the same goal and isn't better or worse than rising or doing full volume.

Do you rinse your grains when mashing with BIAB?

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Do you rinse your grains after mashing with BIAB?

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SpargePervert

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thepartsmancometh

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JeffersonJ

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Oddball

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Mysticmead

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