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Practical Milling for the Craft Brewer Bob Hansen Briess Malt & Ingredients Co. April 2007 PowerPoint Presentation
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Practical Milling for the Craft Brewer Bob Hansen Briess Malt & Ingredients Co. April 2007. Milling ultimately is a compromise that each brewmaster reaches with a batch of grain. Their objectives are to find an acceptable middle ground between:. Milling: Definitions or objectives.

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slide1

Practical Milling for the Craft BrewerBob Hansen

Briess Malt & Ingredients Co.

April 2007

slide2
Milling ultimately is a compromise that each brewmaster reaches with

a batch of grain. Their objectives are to find an acceptable middle

ground between:

Milling: Definitions or objectives

Mill(v) to grind into a grist, flour, meal or powder

  • Yield
  • Separation Efficiency (Lautering)
  • Quality
slide6

Milling: Effect on Quality

  • Prevent Husk Going into Kettle
  • Avoid Unground Kernels
slide7

What’s a Mill?

Mill(n) a machine or apparatus for grinding grain

slide9
Buhler www.Buhlergroup.com

Kunzel www.Kunzel.de

Roskamp-Champion www.CPMRoskamp.com

Roller Mills, Manufacturers

slide10

Pre and Post Mill Milling:

Grain Handling

  • “Milling” doesn’t end until Mash in
  • Conveying equipment can be almost as important as milling
slide13
Grain Type/Assortment

Milling: Making themost of your Grist

Mill settings

Grind Profile

Brewhouse Performance

slide15

Equipment Needed

Recommended Sieves

  • No 14………. 1.40mm opening
  • No 30………. 0.600mm opening
  • No 60………. 0.250mm opening
  • Pan
  • Cover

Balances

  • Portable Balance
  • Capacity Minimum 500gms
  • Readability 0.1g – 1 g
grist profile methods standard sieve test
Grist Profile MethodsStandard Sieve Test

This procedure is for the classification of malt grist from mill grinding by sieve analysis. The method employs a mechanical shaker for sieving a quantity of grist through standard sieves

Ro-Tap Sieve Shaker

The Rotap Testing Sieve Shaker accurately reproduces the circular and tapping motion given testing sieves in hand-sieving, but with a uniform, mechanical action assuring dependable, comparable tests.

Tyler Coarse Sieve Shaker

This low cost shaker is designed to be used in coarse testing application. Well suited for preground grist evaluation. A specially designed mechanism provides a shaking action resulting in consistent, accurate results.

manual sieve test
Manual Sieve Test

The method employs manual shaking of U.S. standard test sieves for sieving a quantity of grist through four standard sieves.

slide19
Ro-Tap Shakers and Sieves

VWR Scientific www.vwrsp.com

Fisher Scientific www.fishersci.com

ASC Scientific www.ascscientific.com

Balances

Affordable Scales www.affordablescales.com

Citizen Balances www.citizen.com

Cynmar Scientific www.cynmar.com

VWR

Suppliers

slide20

Evaluating Brewhouse Efficiency

S.G.

X 8.34 #/Gal

Lbs Dissolved Solids

Weight of Wort

X Gal

X % Solids of Wort

X Plato / 100

Yield =

Lbs Starting Grain

Yield Obtained

Brewhouse Efficiency =

Maximum Yield Available

Coarse Grind As-Is Yield

slide21

Evaluating Brewhouse Efficiency

1.048

S.G.

X 8.34 #/Gal

X Gal

X 310

X .12

X Plato / 100

Yield =

= 72.3%

Lbs Starting Grain

450

Yield Obtained

72.3%

Brewhouse Efficiency =

= 92.6%

Coarse Grind As-Is Yield

78%

slide22
Collection Time

Evaluating Brewhouse Performance

  • Quality
    • Sensory Panel
slide26

Plant Trial: Quality

No Significant Differences In:

  • Color
  • Turbidity
  • Sensory
slide28

Other Considerations

Milling Specialty MaltsMill Maintenance

slide29

Summary

Milling is a compromise every brewer makes based on their:

  • Equipment
  • Funding
  • Time
  • Patience
slide30

Summary

  • Most small brewers (<1,000) brls should consider preground.
  • Brewers (esp >5,000brls) can gain by controlling and monitoring their grind
  • Low cost systems can be set up
  • Large brewers chase extract every where they can.