Articles on coffee

Computational Coffee

It blows my mind how everyone is trying to extract coffee without first measuring how hard it’s going to be, and then not using the full range of all their tools. Avoid bitter over extraction, and sour under extraction, by measuring the density.


This post has nothing to do with coffee. It is here after I read a wonderful article on How Coffee Varietals and Processing Affect Taste. It reminded me of a similar, somewhat simpler piece of work I did on Whisky Flavours to Distilleries. Flavour to Whisky Distillery This has been created by using a word …



The size of the roasted coffee bean can affect extraction, learn how. Effect of roasted coffee seed sizes on extraction Coffee seeds increase in size throughout the roast, expanding to about 1.5 times the size of the original green bean. Seed size affects the degree of roasting and can offset the density indicator.  Very small …

Coffee Seed Size AND EXTRACTION Read More »

Grind Settings by Density

Kinu m47 and Flair Pro 2

There have been several requests for SSDI to include grind settings for each density. There are several problems with this. Different espresso basket diameters have different coffee bed depths, which requires different grind settings. For example a standard 58mm basket will require a much finer grind than a 45mm holding the same amount of coffee. …

Grind Settings by Density Read More »

Ground breaking research

Excuse the terrible pun. I want to thank Logan Collinge of Mojo The Beanery for spending several weekends roasting to order for me, and being such a mine of information. The first experiment was to take one single origin green bean, and have Logan roast it to common roast levels across the roast spectrum. The selected Green …

Ground breaking research Read More »

Value proposition for Roasters

I caught up with my original Coffee Sensai one day and enquired what great Single Origin coffee he was currently drinking. I was shocked when he sheepishly confessed, he had ‘given up’ trying Single Origins, because it took him most of the bag to dial it in. Whereas with his preferred routine Blend, at least …

Value proposition for Roasters Read More »

Why measure roasted coffee density

Coffee density measurement will improve your coffee extractions. Under-extracted coffee is sour, and over-extracted is bitter. Measure the roasted coffee density for the best coffee recipes and adjustments.