How do I get the viscosity of a mash mixture in brewing?

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Discussion Overview

The discussion focuses on determining the viscosity of a mash mixture in brewing, specifically in the context of designing a mash tun for beer production. Participants explore methods for calculating viscosity while considering the effects of malt density changes upon water absorption.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant requests a method to calculate the viscosity of a mash mixture, highlighting the challenge of accounting for density changes in malt when it absorbs water.
  • Another participant suggests consulting with commercial brewers or examining existing equipment, indicating that viscosity may vary significantly depending on the type of beer being produced.
  • A third participant emphasizes the importance of considering the density of the liquid rather than just the malt density.
  • One participant recommends looking into BDV viscometers as a potential resource for measuring viscosity.

Areas of Agreement / Disagreement

Participants express varying opinions on the best approach to determine viscosity, with no consensus reached on a specific method or solution. The discussion remains unresolved regarding the best practices for calculating viscosity in this context.

Contextual Notes

There are limitations regarding the assumptions made about density changes and the specific methodologies for measuring viscosity, which have not been fully explored or agreed upon in the discussion.

Will26040
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How do I get the viscosity of a mash mixture in brewing? Please read
Hi, I am designing a mash tun to produce beer. I have 1300kg of malted barley (at a known density) and 3250kg of water. Please could someone outline a method I could use as I am really struggling. One of the main problems I am having is accounting for the density change of the malt when it absorbs water. Are there any online sources that could help? thanks
 
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Will26040 said:
Hi, I am designing a mash tun to produce beer. I have 1300kg of malted barley (at a known density) and 3250kg of water. Please could someone outline a method I could use as I am really struggling. One of the main problems I am having is accounting for the density change of the malt when it absorbs water. Are there any online sources that could help? thanks
That sounds like a commercial production level piece of equipment. This is going to vary a lot by the beer, so I'd see if you can get a commercial brewer to discuss it with you or see what existing equipment is out there.
 
There are many brew pubs with enthusiastic owners. Try one!
I agree with @russ_watters - for what you want, you are likely dealing with production equipment. And you are not considering density - of the liquid. Correct?
 
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