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Coffee brewing control chart
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This chart shows the relationship between strength, extraction and the brewing formula.The amount of coffee being extracted and the amount of coffee solubles in the finished cup determines coffee flavor. |
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USING THE CHART
If you use 4 oz. of coffee and the strength of the brew measures1.40%, follow the line labeled 4.00 oz.down the diagonal line to the 1.40% grid line. This coffee would be STRONG.To move your brew into the box labeled IDEAL, you need to decrease the extraction by decreasing the brewing time and/or increasing the grind size. |
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Strength-Solubles Concentration
The goal for percentage of coffee flavoring material to the amount of water in the finished cup is 1.15% to 1.35%, measured by your Brew Strength Meter or Hydrometer.
Brewing Ratio
The relationship between the amount of ground coffee used per half-gallon of water (as shown by the diag-onal red lines) and extraction.
Extraction-Solubles Yield
The ideal percentage of coffee material removed is 18% to 22% of the solubles.
Optimum Balance
Balancing strength and extraction creates the ideal cup of coffee.This standard is designated the “Golden Cup” by the Specialty Coffee Association of America.
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