Option-O Lagom 01 reviewed: 102 mm burrs, 3,000 euros, and a surprise

2,999 Euros, 2,999 Francs. The Option-O Lagom 01 is the most expensive single-dosing grinder we have tested to date, and simultaneously the official filter coffee grinder of the World Brewers Cup Championship 2026–2029. An evolution of the P100, in our version featuring 102 mm Mizen 102OM burrs (Blind Burrs), stepless RPM adjustment from 200 to 1,700, and a weight that would make some espresso machines jealous: 15.3 kg.

We did not buy this grinder. We borrowed it from Urs Rotzinger, the German Brewers Cup champion, who uses the 01 on his path to the world championship. Thank you, Urs.

The question at the heart of this review: What justifies 3,000 euros for a grinder?

Design & Build Quality

The Lagom 01 is not a piece of designer art—or so we think. It is a statement of robustness. 15.3 kg of CNC-machined 6061-T6 aluminum, 17 cm wide, 30 cm deep, 36 cm high. No elegance à la P64 or Casa, but a grinder that feels like it was built to last for the next twenty years.

The build quality is what we’ve come to expect from Option-O: everything is solid, everything is well thought out. The burrs are accessible almost without tools—lift the top, twist, and pull out. Technically, you need a thin pin to release them, but that is so close to tool-free that we rate the cleaning process as very good. More importantly: once reassembled, you are exactly back to your previous grind setting. No recalibration needed.

The magnetic dosing cup (50 g) seats cleanly. It is, however, quite large so that it reaches under the chute. This makes it functional, but detracts from its elegance in use. Much more pleasant: the included portafilter holder, which snaps on magnetically and guides the coffee directly into the portafilter.

Grinder & Technology

Mizen 102OM Flat Burrs, in the version as Blind Burrs. The burrs are screwed on from the back, which is reflected in the homogeneity of the grounds. The RPM control ranges from 200 to 1,700 RPM, adjustable via a scale from 1 to 9. This range is massive and opens up a huge playing field for both filter coffee and espresso.

Lower speeds generally deliver narrower main peaks in the particle distribution and more clarity, while high speeds provide more body. More on that in the PVM section.

The grind adjustment is stepless; each major mark moves the burrs by 7.5 micrometers. There is less than one full rotation between espresso and filter coffee. This makes adjusting the grinder very comfortable and also allows for better reproducibility of the grind setting. With other grinders, you have to note how many times the number 1 has passed the marker when switching from espresso to filter coffee. Integrated are a knocker to prevent grounds from being left in the chute and a purge function that briefly increases the RPM at the end of the grinding process to blow out the temporary retention.

Buying the Option O Lagom O1

🛠️ Recommended specialist workshop for the Option O Lagom O1 in Germany: coffee24*

In Germany, you can purchase the grinder via coffee24.de, though currently only with SSP HU burrs, which have an even narrower main peak. Suitable for absolute high-end specialty coffee.

*We search for specialist partners for you whom we know provide good work and good service. We are in close contact with these retailers. These are affiliate links. If you order via this link, it costs you nothing extra, but we receive a small commission that we invest in new test equipment.

Grinding Speed & Noise Level

75 g in 10 seconds. 18 g in 4 seconds. At espresso grind settings. These are values we usually only see from high-end commercial grinders. The motor (peak 1,300 W, brushless DC) and the large burrs make this possible.

The downside: 89.2 dB. The 01 is loud. Not a piercing, wobbly noise, but rather a turbine sound that ramps up quickly and stops. We are at the boundary between our medium and loud categories.

The consolation: With a 4-second grind time for an espresso, the noise is over quickly. However, anyone who wants to grind early in the morning in an apartment while others are still sleeping should be aware of this.

Grinding Temperature & Consistency

In the temperature test (5 × 18 g, with 20-second pauses), we consistently remained under 30.5 °C. The average value is 29.3 °C. Despite the enormous speed, there was no significant heating. Top category.

What this means in practice: You can grind several portions in a row without losing volatile aromatics to heat. This is relevant for light roasts, where thermal stress is quickly noticeable.

The consistency confirms the picture: 0.04 g standard deviation over 15 consecutive grinds. Excellent. The 01 reliably dispenses the same amount, grind after grind.

Retention

Retention is the most exciting measurement for 102 mm burrs. The grinding chamber of the 01 offers a lot of air space between the carriers—in a classic grinder of this size, you would be faced with double-digit gram values.

We measured the retention in two configurations:

Without purge function (Start-Stop): 0.7 g temporary, 0.1 g permanent, 0.8 g total.

With purge function (Auto mode): 0.4 g temporary, 0.1 g permanent, 0.5 g total.

0.5 g total retention for 102 mm burrs. That is truly impressive. We would not have been surprised by much higher values. The design of the carriers and the purge function push the value to a level that many significantly smaller grinders do not reach.

Single-Dosing Performance

18 g in, 18 g out. Across five consecutive grinds, we measure deviations between 17.9 and 18.0 g, provided the purge function is active.

The built-in anti-static system works remarkably well. Unlike the P64, which is barely usable without water spray, you can operate the 01 easily without RDT. A bit of static at the edge of the dosing ring, but nothing that interferes with the workflow.

With RDT, the output amount increases slightly above 18 g (18.1–18.2 g) because the water adds weight.

For those who want to grind directly into the portafilter: The included portafilter holder is the more convenient way. Magnetic, cleanly positioned, and the coffee lands exactly where it should. A really nicely crafted hanger. And a genuine design advantage is that the coffee falls from top to bottom into the portafilter, rather than via an angled chute as is the case with the vast majority of all espresso grinders.

Grind Repeatability

In the adjustment test (Espresso → Ristretto → Lungo → back to Espresso), the 01 shows what its stepless adjustment and mechanical precision are worth.

The peak width at T4 (espresso output setting): 183.9 µm. After the complete adjustment sequence back to espresso (T7): 182.5 µm. A deviation of 1.4 µm—practically identical. You get exactly back to where you started.

The x50 value differs between T4 (274 µm) and T7 (287 µm) by around 12 µm, which is within the normal range of variance.

What this means for daily use: Anyone switching between espresso and filter doesn't need to recalibrate after resetting. The grinder delivers reproducibly. Very good.

Particle Distribution

We analyzed the particle distribution in cooperation with the ZHAW using the Retsch Camsizer X2.

Espresso setting (T4):

x50: 274 µm | Fines content (Qf <100 µm): 32.7 % | 60%-peak width: 184 µm

A peak width of 184 µm is narrow. The grind is homogeneous, and extraction is consistently even. In the cup, this manifests as clarity and structure—the espresso doesn't feel "muddled." For comparison: Above around 300 µm peak width, we regularly experience espressos where individual flavor notes fall apart.

The fines content of 33% provides enough body without overloading the espresso. This suits medium-light roasts just as well as more classic profiles. For those who prefer very light, complex roasts: with a lower RPM, the fines content can be further reduced.

RPM comparison (filter coffee):

We also tested the 01 in filter coffee mode with two RPM settings: minimum (200 RPM) and maximum (1,700 RPM). Both cups are clean and balanced. The low speed delivers a narrower peak, more clarity, and less bitterness. The high speed provides a bit more body but a slightly drier aftertaste.

However, even at maximum RPM, the 01 has so much clarity due to the narrow particle distribution that the difference is subtler than expected. Both settings work. The RPM control is a tool for fine-tuning, not a mandatory routine.

Tasting

In the cup, the 01 demonstrates exactly what the particle distribution promises: clarity. That is the word that comes to mind most often with this grinder.

Espresso with the Apas (our reference coffee): plenty of sweetness, soft texture, clear acidity without sharpness. The body is on the softer side—not a heavy, overwhelming espresso. This fits medium-light roasts, but can also be adjusted cleanly for somewhat darker profiles.

In the filter coffee test (Amigo): surprisingly low bitterness, a clean cup with plenty of balance. Both RPM settings deliver cups that are not limited by the grinder.

And then there was a light, complex coffee from the Kaffeemacher orange line called Yulieth. Extreme clarity, plenty of sweetness, vibrant acidity. The grinder extracts the maximum from such coffees without over-extracting.

Filter Coffee

The 01 is the official WBrC grinder 2026–2029. That is no coincidence. Anyone who sees filter coffee as their primary application gets a grinder that is fast and temperature-stable even for 40 g for batch brews.

The combination of speed, RPM control, and narrow particle distribution makes the 01 interesting for filter coffee use in a commercial setting. Even more so for home use—if space is not an issue.

The limitation: No entire bag fits under the grinder to grind through. Those who want to grind entire packages for customers need a different solution.

Conclusion

The Option-O Lagom 01 is the benchmark in most measurement categories among the grinders we have tested to date. 0.5 g retention with 102 mm burrs, 29.3 °C grinding temperature at 75 g/10 sec, 0.04 g standard deviation, peak width of 184 µm, nearly perfect repeatability. The numbers speak for themselves.

Strengths:

– Particle distribution and cup quality at benchmark level
– Retention outstanding for this burr size
– Temperature, consistency, speed: top in every category
– RPM control as a tool for flavor management
– All-purpose (espresso + filter) within one rotation
– Anti-static works without RDT

Weaknesses:

– 89.2 dB: loud
– 2,999 EUR/CHF: high entry price
– Design functional, not elegant
– Dosing cup handling a bit clumsy

For whom?

High-end home baristas who want one grinder for espresso and filter coffee without compromising on particle distribution. For specialty coffee shops as a filter coffee grinder or as a high-throughput single-dosing solution.

For whom not?

Anyone looking for an elegant, quiet grinder for the kitchen counter. Anyone who cannot or does not want to invest 2,999 euros in a grinder. Anyone who already has a specialized espresso grinder and doesn't brew filter coffee.

If the 01 cost 1,500 euros, the recommendation would be clear for everyone who wants both. At 2,999 euros, it is an investment you have to make consciously. But what you get in return is currently hard to beat. However, the qualitative difference compared to some grinders in the 1,400 – 2,000 euro price range (such as the DF83 V2) is, honestly, primarily the speed. In terms of quality and sensory experience, the good grinders with good burrs don't differ all that much.

Technical Data Overview

You can find all our espresso grinder reviews in the espresso grinder overview.