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Category Archives: Data Analysis

A Study of Espresso Puck Resistance and How Puck Preparation Affects it

In this post, I present an experiment showing that deep WDT helps improve repeatability, and I discuss how to improve espresso preinfusion.

Posted byjgagneastroJanuary 16, 2021February 7, 2021Posted inData Analysis, Espresso, Experiments, Physics4 Comments on A Study of Espresso Puck Resistance and How Puck Preparation Affects it

The Effects of Varieties, Origin and Processing

In this post I discuss the effects of coffee varieties, origin and processing on average extraction yield and brew time.

Posted byjgagneastroSeptember 5, 2020Posted inCoffee Processing, Coffee Varietals, Data Analysis, Extraction9 Comments on The Effects of Varieties, Origin and Processing

Measuring Coffee Concentration with a 0.01% Precision

In this post I present an updated methodology to measure TDS with a 0.01% precision using a refractometer.

Posted byjgagneastroSeptember 21, 2019October 14, 2019Posted inData Analysis, ToolsTags:Coffee geeks, Coffee refractometer9 Comments on Measuring Coffee Concentration with a 0.019 Precision

An Investigation of Kettle Temperature Stability

In this post I investigate the stability of my Brewista kettle with the Brewcoat insulation and an additional layer of aerogel.

Posted byjgagneastroSeptember 6, 2019September 6, 2019Posted inBrew Methods, Brew Temperature, Data Analysis, Experiments10 Comments on An Investigation of Kettle Temperature Stability

An In-Depth Analysis of Coffee Filters

In this longer than usual post, I do a very detailed microscope analysis of various V60, chemex and siphon paper and cloth filters.

Posted byjgagneastroAugust 4, 2019September 2, 2019Posted inCoffee Filters, Data Analysis, MathsTags:Coffee brewing, Coffee Filters, Coffee geeks, Coffee science66 Comments on An In-Depth Analysis of Coffee Filters

How Coffee Varietals and Processing Affect Taste

In this post, I used tasting notes from 1500 bags of coffee too bring out how perceived flavor is affected by coffee varietal and processing

Posted byjgagneastroJuly 23, 2019September 2, 2019Posted inCoffee Processing, Coffee Varietals, Data Analysis, Tasting Notes25 Comments on How Coffee Varietals and Processing Affect Taste

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