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Old 03-17-2012, 05:18 PM   #1
sweetcell's Avatar
Jan 2012
Rockville, MD
Posts: 5,118
Liked 975 Times on 706 Posts

i'm doing a partial BIAB batch at the moment. i finished my mash and noticed that there was a lot of solid material in my wort - "grain dust" floating in the liquid. either my grain was crushed too fine or the bag's holes/netting is too big. i decided to filter out a lot of the solids by running all my wort through a fairly fine strainer. i did this to limit how much trub makes it into my fermenter, and to filter out any husk material that might be in that dust (believing that it would result in tannin extraction during boil - probably not a lot, but some).

bad idea? anything i should be concerned about?

yes, i know, i should RDWHAHB... well, i'm HAHB at least
What hops should I grow? Looking for cheap honey?
- Drinking: BPA made with ingredients from NHC, 2 blends of a rye sour: ECY20 + ECY34, local sour cherry kriek #2, brett'ed Belgian blond on raspberries
- Aging: Imperial Chocolate Milk Stout (half on coconut), sour blond on second-use cherries, English Barleywine (half on brett), 3726 saison w/ brett x2 (dregs mix & Lochristi), GNO 3724 saison w/ brett mix, sour cherry mead, acerglyn, and a few other sours...

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Old 03-17-2012, 06:19 PM   #2
It's about the beer.
Tiber_Brew's Avatar
Apr 2010
Upper Peninsula, Michigan
Posts: 2,418
Liked 213 Times on 150 Posts

Not a bad idea. In fact, that is (or should be) part of all all-grain brewing processes. It's called the vorlauf and it's intent is to remove grain/husk material from the wort before sparging into the boil kettle, usually by recirculating the wort through the mash for a few minutes. This prevents tannins, amongst other benefits.

On tap:
1. Imperial Oatmeal Espresso Stout 2. Michigan IPL 3. Helles 4. Kentucky Common 5.[Nitrogen] Oat Blonde
1. American Pale 2. American Pale 3. ESB 4. ESB 5. none 6. none
1. Brett Ale 2. none 3. none 4. none 5. none
About 23 gallons of beer & 3 gallons of mead
Kegged & conditioning:
Rye Barrel aged DIPA, Altbier, Helles

Current batch #: 246

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