An App to Measure your Coffee Grind Size Distribution

[Edit April 25 2019: Please note this is not an iPhone or Android app, and I have no plans to release it as such. You can use your phone or any other camera to take pictures of your ground coffee, but then you need to install the application on either OS X or through PythonContinue reading “An App to Measure your Coffee Grind Size Distribution”

Measuring and Reporting Extraction Yield

Since I received the VST Coffee Lab III refractometer thanks to Vince Fedele’s generosity, I started logging the concentration (in % TDS) of every coffee I brew. This allows you to calculate the average extraction yield of your brew, which represents the fraction of your coffee beans by mass that was dissolved in your brewContinue reading “Measuring and Reporting Extraction Yield”

Statistics and Blind Tasting

A friend recently asked me a really interesting question about the statistical significance of blind tasting. He asked: “How many times should I successfully identify an intruder coffee by blind tasting among a set of three cups, in order for my experiment to be statistically significant ?“ As you might imagine, I really like thisContinue reading “Statistics and Blind Tasting”

Water for Coffee Extraction

[Edit August 23, 2019: Please have a look at this new blog post if you are interested to craft your own brew water recipes ! ] Introduction In my first post, I mentioned how the water you use to extract coffee has a significant impact on the taste profile of your cup, in a way that doesContinue reading “Water for Coffee Extraction”