Broom, Dave. Gin: The Manual. 2017 edition. London: Mitchell Beazley, 2017. First published 2015. ISBN9781784723576.
Expert practice, not a blinded sensory standard. The Negroni ratio table was visually checked:1:1:1;1.5:1:1;2:1:0.5;2:1:1. Keep X separate from a low quality score. Do not average scores across incomparable test formats.
Dave Broom, Gin: The Manual, 2017 ed. (London: Mitchell Beazley, 2017), supplied PDF pp. 50–59 (printed pp. 46–55).
Dave Broom, Gin: The Manual, 2017 ed. (London: Mitchell Beazley, 2017), supplied PDF pp. 50–59 (printed pp. 46–55).
59
50
Broom, Gin: The Manual, PDF 50–59.
PDF pagination — Evaluation framework, flavor camps and recipe ratios
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No access, PDF 50–59 (printed 46–55); Evaluation framework, flavor camps and recipe ratios. Evidence: 
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Dave Broom, Gin: The Manual, 2017 ed. (London: Mitchell Beazley, 2017), supplied PDF pp. 50–59 (printed pp. 46–55).
Short form: Broom, Gin: The Manual, PDF 50–59.
Bibliography: Broom, Dave. Gin: The Manual. 2017 edition. London: Mitchell Beazley, 2017. First published 2015. ISBN9781784723576.
Usage map
Expert practice, not a blinded sensory standard. The Negroni ratio table was visually checked:1:1:1;1.5:1:1;2:1:0.5;2:1:1. Keep X separate from a low quality score. Do not average scores across incomparable test formats.