Kruve for Espresso, an Experiment – Part 2

If you haven’t read Part 1, please do so before reading this post for complete details and tasting notes. To quickly summarize, the first and second shots I pulled were off. The first shot was too fast and the second was too slow. This time, the flow and timing were right on point using the same variables, only difference was the grind size. I started by using the 300 and 600 micron sieves and 34.6gm of coffee from the Super Jolly, which is almost two times my usual dose of 17.5gm.

I dumped the 34.6gm of coffee into the Kruve and started sitting for approximately 1 minute.

The result from the middle tray was approximately 22.5gm, which means between boulders and fines, I lost 12gm. That’s a hair better than last week’s experiments.

Out of the 22.5gm I used approximately 17.5gm (my usual dose) and pulled the shot

The shot was neither fast nor slow, very much the same time it takes for my non-sifted shots but the taste was nothing like my usual shots. The shot was absolutely delicious, creamy, sweet, rich and with a tiny little bit of welcomed acidity. I’m not a fan of too much acidity that’s why I stay away from light roast coffees but the acidity here was just a hint and it added to the complexity of the shot.

My conclusion here is that the Kruve and its impact on the uniformity of coffee grounds is undeniable but the questions are, will I be okay with sacrificing more than 10gm of coffees every time I pulled a shot? What about the time, do I really want to add more than 15 Minutes (cleaning the Kruve and the mess it makes take time), to my routine and workflow to achieve a better shot? With these questions in mind, I have decided to use the Kruve but only on weekends. On weekends, I have much more time in the morning and I can enjoy the process. On weekdays, not so much.

The Force Tamper Distribution Tool vs. the OCD Knockoff Distribution Tool

For this week’s post, I wanted to compare two different coffee distribution tools, The Force Tamper distribution tool vs the OCD knockoff distribution tool. Both tools are supposed to achieve the same thing, which is distribute the coffee grounds evenly in the portafilter basket, albeit using different methods. The OCD knockoff is using three fins that are slightly angled as to push (distribute) the coffee around as you twist the tool. The Force Tamper built-in distribution tool uses a metal bar that sits on what appears to be tiny springs. The base’s weight sits on the coffee grounds and when you start twisting the tamper/base the metal bar starts pushing the coffee around to also distribute the coffee and the springs that the bar is sitting on ensures that it adapts to coffee bumps or any unevenness in the basket, the same way a car’s suspension adapts to road unevenness.


For the purpose of this comparison, I have chosen to pull 2 shots, one using the OCD knockoff distribution tool and the other using The Force Tamper built-in distribution tool. The only variable here is the distribution tool. Both shots were pulled using the same coffee (Kimbo Superior Blend), same grinder (Mazzer Super Jolly), same espresso machine (Nuova Simonelli Musica), same cooling flush duration (5 to 6 seconds after flash boiling), same basket (VST 20gm) and even same tamper (The Force Tamper, one with base that has the built-in distribution tool and the other with a flat base without the built-in distribution tool).

The results were interesting, the shot pulled with The Force Tamper built-in distribution tool looked nicer and a little less bitter. Below is a side by side comparison of both shots 10 seconds after the first drop of coffee appeared from the basket.

The Force Distribution Tool vs. OCD Knockoff
Shot pulled using the OCD knockoff distribution tool
The Force Distribution Tool vs. OCD Knockoff 2
Shot pulled using The Force Tamper built-in distribution tool

To be totally fair, the less bitter taste could have been the result of a little longer cooling flush before I pulled the second shot but it could also be the result of a better distribution, as shown in the side by side pictures above.

Personally, I prefer The Force Tamper built-in distribution tool for the following reasons:

  • Visually better extraction (taste difference is negligible but definitely better distribution).
  • Tool costs under $30 and can be easily retrofitted to your existing The Force Tamper. The OCD knockoff costs around the same, although it can be used with your existing tamper but with less than ideal results.
  • More streamlined workflow as there is no need to switch between tools.
  • Unlike the OCD knockoff distribution tool, The Force Tamper does not need to have the depth of the fins adjusted (manually or by adding shims) every time you change dose or coffee, as it adapts to the height of the coffee bed.

I have made a video documenting the comparison and you can watch it here:

The Force Tamper Distribution Base

Couple of months ago, Zubing Sun, the owner and inventor of The Force Tamper posted a video on Instagram demoing a tamper base (for The Force Tamper) that can distribute the grounds inside the basket before tamping, needless to say I was intrigued and impressed. Zubing graciously sent me couple of units for review along with a clear glass basket so that I’m able to see in action the distribution done by the new base.

As pictured below, the base has a thin metal bar going across the diameter of the base Zubing sent me one flat and one ripple base. This thin metal bar moves up and down as needed and depending on the amount of coffee in the basket.

The way it works, you sit your The Force Tamper on the basket like you would do for tamping, except instead of pressing down right away you let the weight of the Tamper sink inside the basket and then you rotate the tamper handle few times at either direction (clockwise or counterclockwise). This motion leverages the metal bar that’s built in the base to sweep or distribute the coffee.

Here’s a video showing how it works

Here’s another video showing the distributor tool in action, using a clear basket that was designed to showcase the distribution action.

Before receiving this base, my flow involved using a separate distribution tool (similar to the OCD distribution tool) to distribute the coffee and then tamping the coffee. There are 3 main things I like about this base:

  1. No need for a separate tool. Distribution and tamping can now be done using one tool and that’s The Force Tamper.
  2. No need to adjust the depth of the distribution tool. If you have owned a distribution tool, you know that every time you change dosing or coffee you will need to manually adjust the depth of the blade of the distribution tool to get a flat, even puck with no holes or irregularities. Since the distribution done by the base relies on the weight of the tamper, there are no adjustments needed.
  3. The price. For $29 you get a base for tamping and a distribution tool. This price is unbeatable on the market as the cheapest distribution tool out there cost more than $80. Even the Chinese knockoffs of the OCD distribution tools cost more than $40.

Overall, I’m very happy with the new distribution base for The Force Tamper. It does the job effectively and efficiently while saving you some cash in the process.