Overview
The Mazzer ZM represents Mazzer entry into the modern single-dose grinder market. Featuring 83mm flat burrs in a completely redesigned chassis, the ZM combines Mazzer decades of commercial grinding expertise with contemporary single-dose workflow demands. Retention has been dramatically reduced compared to traditional Mazzer grinders, hovering around 0.5g. The electronic dosing and digital display add modern convenience, while the powerful motor and precision burr alignment deliver the grind quality Mazzer is known for. The ZM signals that even the most traditional commercial grinder manufacturers recognize the single-dose revolution, and Mazzer execution is characteristically excellent.
The Mazzer ZM features a 83mm flat burr set, crafted from steel. The burrs spin at 1400 RPM, offering fast grinding for high-volume use. Grind retention is approximately 0.5g, which is impressively low and suitable for single-dose workflows.
At $2,800, the Mazzer ZM is aimed at uncompromising enthusiasts and professionals who want the absolute best. Key workflow features include single-dose design (no hopper needed) and stepless grind adjustment for infinite precision. The flat burr design produces a more uniform particle distribution, prized for clarity and sweetness in the cup.
The Mazzer ZM is weighing 14.0 kg, manufactured in Italy, powered by a 400W motor. Its footprint measures 200 x 300 x 500 mm (W×D×H).
Pros & Cons
Pros
- Large 83mm burrs deliver fast, consistent grinding with excellent particle uniformity
- Designed for single dosing — weigh your beans in, get precisely that amount out with minimal waste
- Stepless grind adjustment allows infinite precision for dialing in any coffee to perfection
- Low retention of 0.5g is suitable for single-dose workflows
- Flat burr geometry produces highly uniform particle distribution, prized for clarity and sweetness in espresso
Cons
- Premium pricing at $2,800 puts it out of reach for most home setups
- Heavy at 14.0 kg — a permanent counter fixture rather than something you'll move around
Full Specifications
| Brand | Mazzer |
|---|---|
| Model | Mazzer ZM |
| Category | Flat Burr |
| Country of Origin | Italy |
| Year Introduced | 2021 |
| Burr Size | 83 mm |
| Burr Material | Steel |
| Burr Type | 83mm flat |
| Grind Speed | 1400 RPM |
| Retention | 0.5 g |
| Single Dose | Yes |
| Stepless Adjustment | Yes |
| Hopper Capacity | 200 g |
| Motor Wattage | 400 W |
| Dimensions (W x D x H) | 200 x 300 x 500 mm |
| Weight | 14.0 kg (30.9 lbs) |
| MSRP | $2,800 |
Our Verdict
The Mazzer ZM uses flat burrs, which are the preferred geometry for espresso among competition baristas and specialty coffee professionals. Flat burrs produce a more unimodal (uniform) particle distribution, which translates to cleaner, sweeter espresso with more clarity than conical alternatives. This is an end-game grinder for dedicated enthusiasts. The price is substantial but reflects the engineering required for top-tier particle uniformity. Pair it with a machine that does justice to the grind quality, and you'll taste the difference in every shot.
Frequently Asked Questions
Can the Mazzer ZM grind fine enough for espresso?
Yes, the Mazzer ZM is capable of grinding fine enough for espresso. Its stepless adjustment allows you to dial in precisely for any coffee.
Is the Mazzer ZM good for single dosing?
Yes, the Mazzer ZM is designed for single dosing. With only 0.5g of retention, virtually all the coffee you put in comes out ground. Weigh your beans before grinding for the most consistent results.
Why choose flat burrs in the Mazzer ZM?
Flat burrs produce a more uniform (unimodal) particle distribution compared to conical burrs. This translates to cleaner, more transparent espresso flavors with pronounced sweetness and clarity. Many competition baristas and specialty roasters prefer flat burr grinders for this reason.
How do I maintain the Mazzer ZM?
Clean out retained grounds after each use with a brush or bellows. Deep clean the burrs every 2-4 weeks by removing them and brushing away oil buildup. For the motor, occasional use of grinder cleaning tablets (like Grindz) helps remove coffee oil buildup. Never wash burrs with water.
Is the Mazzer ZM worth $2,800?
The grinder is the most important variable in espresso quality — more important than the machine. Investing in a quality grinder like the Mazzer ZM will have a bigger impact on your espresso than upgrading any other piece of equipment. If you're serious about espresso, this level of grinder investment is justified.