A directory of my articles by topic — This is a collection of collections of stories. I have stories on espresso, work, school, myself, my family, LEGO’s, and Photography. I hope this page helps navigating my list of stories. A Collection of Espresso Articles A Collection of Work and School Stories Personal Stories and Concerns LEGO Story Splash Page Photography Splash Page

A grouping of sub-groups of coffee related writings — This is a collection of collections of my articles on different topics, each with their own splash page. Improving Espresso A Summary of the Staccato Lifestyle Measuring Coffee Grind Distribution Fines Migration in Espresso Coffee Extraction Coffee Roasting Coffee Beans Paper Filters for Espresso Espresso Baskets and Related Topics Espresso Opinions

My experimental data collection — In coffee, taste is king, but quantifiable data for extraction efficiency using Total Dissolved Solids (TDS) has been a useful tool to help evaluate hardware and techniques. TDS is measured using a refractometer where there is a preference for a digital refractometer. In the past year, the cost of a…

This is a summary page of the multiple tests done on the first DiFluid digital refractometer and their second refractometer the R2. For someone interested in a cheaper refractometer, DiFluid seems to be an interesting option especially for espresso. …

Cutting up the shot to learn something new — Coffee extraction happens over time, and it changes throughout an espresso shot. To better understand this, people have used salami shots. To make a salami shot, one uses multiple cups during the espresso shot. …

Another look at tiny particle movements — Espresso extraction is a complicated process, and there is still so much to learn. Often, problems in extraction have been attributed to fines migrating towards the bottom of the puck during the shot. However, the theory of fines migration seems to be light on evidence in favor, and I have…

How clean is clean? — Typically, the cleaner the measurement tools, the better, but how much better? In coffee, the key measurement outside of taste is Total Dissolved Solids (TDS), and there are a few ways to get the desired sample. Usually, one uses a pipette, but to use an unused pipette for each sample…

Comparing old and new data — I have been examining filter baskets for a few years, and as a result, I have some data on my basket when I originally bought it. I thought it would be interesting to see how the basket has changed and if I can measure that change. …

Modifying shower screens to better improve water input — In the past few months, my focus in espresso has been water input. I have wondered how much of side channeling is simply coming from water input. So I started experimenting with aluminum foil, and I was quickly impressed. …