Optimizing Brewed Coffee Quality Through Proper Grinding

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First and foremost …Is there a particular grinding problem or issuethat you would like to see addressed today?THERE’S S NOTHING WORSE THANSITTING THROUGH A PRESENTATION ANDWALKING AWAY “EMPTY HANDED”!
• The Coffee Quality Cycle• Brewing Theory:– Key factors in Coffee Brewing or Extraction:• Particle size• Particle uniformity• TimePresentation Outline– The “Big Picture” in Coffee Brewing• Effect of Temperature on Ground Coffee• Analyzing and Testing Ground Coffee• Grinding for Pods and Espresso CoffeeQuestions andDiscussions
Page 1: Optimizing Brewed Coffee QualityThr
Page 6 and 7: Theoretical CoffeeQuality = 100%Max
Page 8 and 9: Coffee ProcessingTipping PointPoor
Page 10: Coffee RoastingTipping PointOver/Un
Page 13 and 14: The great thing about cupping coffe
Page 15 and 16: We don’t t brew whole bean coffee
Page 17 and 18: Proper Extraction and StrengthThe a
Page 19 and 20: Proper Extraction and Strength18%22
Page 21 and 22: The Center of the Universe for Coff
Page 23 and 24: Grind Comparison100 - 300 particles
Page 25 and 26: Average Particle Size by GrindAvera
Page 27 and 28: Micro Analysis of ExtractionIdeal G
Page 30 and 31: The Importance of Grind UniformityT
Page 32 and 33: Grind Uniformity ComparisonNon-Unif
Page 34 and 35: Roller vs. Disc Grinder% Retained (
Page 39 and 40: Optimal Brew Time vs. Particle Size
Page 41 and 42: Effect of Cycle Time on TasteCourte
Page 45 and 46: Macro Analysis of ExtractionEspress
Page 47 and 48: Macro Analysis of ExtractionEspress
Page 49 and 50: Micro Analysis of ExtractionH2OConc
Page 51 and 52: The “Gold Cup” Standard Calcula
Page 53 and 54:
The Key Principals of Coffee Extrac
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Ideal Matrix of Grind vs. TimeGrind
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Temperature Rise During Grinding170
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One Example of the Results from aWa
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Is Evaluating Ground Coffee“By Ey
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What do you see?
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Which Line is Longer?
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Which Line is Longer?
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They’re the same length.
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They’re both the same size.
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Nope.
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Analyzing and TestingGround Coffee
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The Ro-Tap Method% Retained (Non-Cu
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Ro-TapCalculationTEST #DATE:NOTES12
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Laser Particle Size Analysis
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Laser Analysis Results%201080706050
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Use about 50 grams24 mesh/700 umscr
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%RetainedRetainedononScreenScreenTh
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SegregationOnce coffee is ground, c
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Espresso andSingle-CupServing metho
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… or shaped like these
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Pod vs. Fresh BrewPerformance Compa
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Pod vs. Fresh BrewPerformance Compa
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Now let’s take acloser look atEsp
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Let’s look at an espresso particl
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Basic Illustration ofBimodal/Plurim
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Questions?
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Optimizing Brewed Coffee Quality Through Proper Grinding

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