Coffee Data Science
I have loved lever machines since I happened upon one in my mother-in-law’s basement. We were looking through a backroom, and I stumbled upon la Pavoni. She let me have it, and I cleaned it up. However, I still hadn’t upgraded my grinder to truly appreciate it. Little did I know, only a few weeks separated me from getting another lever machine and the love of my coffee life, the Kim Express.
I bought the Kim Express from an estate sale, and I didn’t fully understand how rare the machine was. Over the years since, I have bought La Peppina, Enrico of Italy (ItalianStyle), Flair, Kompresso, and a few more Kim Express machines.
Lever machines are distinct from other espresso machines because the user has direct control over the flow rate with the lever. That is the basic concept, but they have evolved quite a bit.
Lever machines fell out of household fashion once water pump machines became available and cost effective. A lever machine still gives the control that costs much more money for a pump machine of the same caliber, but they require a bit more attention to detail.
I have studied a few of the other machines available. While there are resources to read about old machines, particularly Francesco Ceccarelli, I haven’t seen the machines categorized or grouped together based on their similarities and differences. From my own experiences with my machines, I know they all have the quarks, and I wanted to create a taxonomy to help understand which machines functioned most similar to one another.
I used Francesco’s list plus some machines not on that list to make this chart. All the machines in this chart are examples for machines in that group. Often there were many more that I didn’t include. My aim was to show their main differences.
Continue reading: https://towardsdatascience.com/taxonomy-of-lever-espresso-machines-f32d111688f1?source=rss—-7f60cf5620c9—4