Eureka Mignon Manuale Review: Affordable espresso entry-level and hidden gem with upgrades

Eureka's product range is often as opaque as a poorly extracted espresso. You have the Silenzio, the Specialita, the Perfetto – and at the very bottom of the price hierarchy is the Eureka Mignon Manuale. With a street price of around 240 Swiss francs (or euros), it is the most affordable ticket into the world of traditional Italian grinders.

The grinder was developed at a time when single dosing was not yet a topic for the mass market. However, it actually works mechanically just like such a grinder: it has an on/off switch – and that is it. No programmable time, no portions. This is exactly how modern single dosing grinders work, only that they have been further optimized, primarily to reduce retention.

Retention is the area of a grinder that fills up with ground coffee residues that are not dispensed directly into the shot. Without optimization, we measure about 3 grams of retention in the Manuale. That is quite classic for an old-school "dosing grinder." However, when we perform optimizations ourselves, this value is reduced massively.

This is why this review is also a guide on how you can turn the classic Mignon Manuale into an affordable, Eureka-quality single dosing grinder. Why is it worth it? Because the particle distribution and the espresso quality absolutely speak in favor of this grinder!

Working classically with the Mignon Manuale

Many of the more affordable espresso grinders that hit the market when "grinding on demand" became popular both at home and in gastronomy were equipped without time-controlled dosing and with a simple bean hopper. Instead of being ground into a dosing chamber, the coffee is ground directly into the portafilter. The home barista often used to control the amount by eye. A few weighed the output.

Since the output amount is crucial for adhering to the brew recipe, we teach strict weighing in our home barista courses. This is quite simple with the Eureka Mignon Manuale: We position a scale in front of the grinder and grind directly into a dosing cup that is standing on the scale. When the target amount is reached – let's say 18 grams of coffee for a double espresso – we stop the grinding manually.

The coffee is then transferred from the dosing cup into the portafilter, tamped, and the espresso is pulled.

Feel: The solid Eureka foundation

A Eureka is, at almost every price point, a Eureka. And yes, the Mignon series with its solid, milled aluminum body hardly differs in basic quality from the Manuale to the expensive Oro XL.

Unfortunately, the Manuale comes with the small, tiny, and repeatedly criticized mini grind adjustment dial. If you only want to make one single upgrade to the grinder, make it this one: replace the dial with a larger one. Precise espresso adjustment is otherwise virtually impossible. The larger the diameter, the more accurately you can control the adjustment and, above all, note it down.

The adjustment is, in principle, stepless. However, you only notice that with a different dial. If you adjust the grind size with the small original dial, you automatically jump in larger steps. There is no orientation whatsoever, and returning to a previous recipe is simply impossible.

Otherwise, the Manuale features the aforementioned on/off switch, 50 mm flat-parallel grinding discs, and a bean hopper with a capacity of about 300 grams. One detail is annoying in everyday use: if you push the slider in and remove the hopper, a good 11.5 grams of coffee remain in the chute, which would have to be painstakingly removed before changing beans.

The Mignon Manuale is 35 cm high, 14 cm deep (16 cm with plug), 12 cm wide, and weighs 5.6 kilograms. The grinding discs rotate at a fixed speed of 1350 revolutions per minute.

In operation: Not for sensitive ears

Before we talk about the quality of the grounds, we have to talk about the volume. The name "Silenzio" for the more expensive models is not a coincidence, as the Manuale lacks any of the sound insulation installed there. In the test, we measured a proud 86.6 decibels. That is loud. Really loud. For comparison: the insulated Specialita is closer to 78 decibels. Anyone wanting to make espresso in the morning without waking the whole house will not find the Manuale to be a friend.

The speed is also rather leisurely. The grinder takes about 17.4 seconds for 18 grams of espresso beans. Without countermeasures, the grinder also sprays quite a bit, and the coffee grounds end up not only in the portafilter but also often on the countertop due to static electricity.

The lab: Surprising inner values

We unscrewed and measured the grinder. Inside, 50-millimeter hardened steel discs are at work, which are classically screwed through the grinding disc. A critical point with every grinder is the retention. If we use the grinder with the standard bean hopper, it retains about 3.2 grams of coffee grounds inside in total. That is relatively low for a dosing grinder, but a lot in the age of single dosing – especially if you want to use the grinder that way.

If we, for example, put 18 grams of coffee into the empty grinder, we lose up to 2.4 grams in the so-called interchangeable retention. The permanent retention, which virtually never sees the light of day, includes another 0.8 grams.

The particle distribution: The hidden star

We had the grounds of the Manuale measured in collaboration with the ZHAW (Zurich University of Applied Sciences). In this standardized measurement procedure, which we have already carried out on over 90 grinders, the small 50mm grinding discs show an astonishingly homogeneous picture.

We arrive at a main peak of 200.8 microns, which is very narrow and good. Many particles are of a similar size and are therefore extracted evenly. This is countered by a rather higher fines peak, i.e., fine particles that form good resistance in the portafilter (puck).

Interestingly, the affordable Manuale grinds "cleaner" and with a narrower peak here than, for example, a Niche Zero, which costs significantly more. The grinding mechanism thus delivers a quality that is far above what the price would suggest. This is a real challenge to the competition.

The upgrade: From beginner to single dosing expert

The good particle distribution invites one to further optimize the grinder – and this is possible thanks to many available third-party additions. We ourselves have identified the three most sensible upgrades:

• The larger grind adjustment dial ("King Size")
• The single dosing bellows (hopper)
• A better grounds guide (funnel)

Since the small adjustment dial and the retention bothered us, we modified it. First, we replaced the tiny original dial with a larger one, called "King Size" by Eureka itself. This finally allows the grind size to be adjusted delicately and precisely.

The real breakthrough is the conversion to single dosing. We removed the standard hopper and replaced it with a bellows attachment. If you now operate the bellows at the end of the grinding process, you actively push the coffee residues out of the grinding chamber.

The result in the lab is impressive: the retention is reduced to 0.1 to 0.2 grams. With that, the 240-franc grinder suddenly plays in a league with dedicated single dosing grinders that often cost twice or three times as much. Anyone who performs this small conversion upgrades the machine massively.

The small, clip-on ejection guide also ensures that the grounds end up better in the dosing cup. Yes, such a cup is also a sensible investment, just like a small scale for weighing the amount of coffee powder.

Taste in the cup

Measurements are important, but does the espresso taste good too? We tasted various roasts, including our dark Apas and medium roasts. Since the particle distribution is very homogeneous, we succeed in producing espressos with a beautiful texture and a round body.

The grinder is excellent for classic, dark to medium roasts. Here, it plays out its strengths to the full and delivers results that are hardly distinguishable from significantly more expensive grinders.

However, anyone who primarily drinks very light, fruity roasts might hit limits. We often couldn't set the grinder fine enough – lighter roasts require an even finer grind to develop sufficient resistance in the portafilter. During our experiments, we even heard the grinding discs rubbing against each other before the espresso flowed slowly enough. This is not for light roast lovers. We have therefore switched back to medium roasts like the Toca or Apas, where the grinder shines.

Conclusion: The best grinder under 300 francs?

The Eureka Mignon Manuale is a fascinating device. "Out of the box," it is loud and somewhat tricky to operate. But at its heart – in the grinding mechanism and motor – good Eureka quality awaits.

The grind adjustment in the base version is challenging, which can be solved by upgrading the adjustment dial. Then, it is also possible to switch reproducibly between recipes and coffees. The grinding speed is slow, and to clean the grinder thoroughly (cleaning), some screws must first be loosened. This is impractical.

And yet: Above all, the espresso in the cup is impressive thanks to very good grind homogeneity. And that is why the Eureka Mignon Manuale is an interesting grinder that – especially as a single dosing grinder with some upgrades – offers a very exciting entry into the world of espresso.

We think that with the appropriate upgrades, the grinder by no means has to hide behind hyped models like the Varia VS3 or the DF54 for its price. You just have to get your hands dirty, but then the grinder is fun and makes damn good coffee!