Ligre siji – Grind-by-Weight at its finest
Imagine this: You have the Ligre Youn espresso machine . It's a monolith. Now you need a grinder. You don't want to compromise on design, but you demand absolute precision.
The Ligre Siji is the answer. It speaks the same design language – minimalist, anodized aluminum, no visible screws. But the best part: it weighs your coffee grounds as it grinds ( grind-by-weight ). Precision down to ±0.1 grams . Every morning.
As specialist retailers in Bern and Zurich , we love them because they make technology "invisible". You operate them intuitively.
Why 55mm flat burrs? The choice for clarity.
Ligre deliberately chose 55mm flat burrs made of hardened steel for the Siji grinder . This distinguishes it from conical burrs and offers specific advantages.
Flat burrs are legendary for their ability to produce clarity and consistency. They create a unimodal particle distribution – meaning most particles are of a very similar size. The result is a clear, defined espresso with pronounced flavor separation .
Compared to conical burrs (which produce more fines and therefore more body/texture), flat burrs deliver:
-
Greater clarity: Flavors are separate and defined (e.g., in Wild Peach you taste peach and apricot individually – not mixed)
-
More brightness: Fruitiness and acidity come through more clearly.
-
Greater consistency: narrower particle distribution → reproducible extraction
-
Less heat generation: With a 55mm diameter, flat burrs grind quickly (9-12 seconds for 18g) → less friction → aromas are preserved.
The 55mm size is the "sweet spot" for home use: large enough for fast, consistent grinding, small enough for a compact design and quiet operation.
Technology in detail – German engineering
-
Grind-by-Weight (GbW) – Patented: Integrated scale with predictive software. The siji weighs in real time and stops precisely at your target weight (e.g., 18.0g). Even after 50,000 grinds (verified with a KUKA robot), the precision remains ±0.1g.
-
55mm Flat Burrs (Hardened Steel): Infinitely adjustable (micrometric) via rotary knob. High grinding speed, low heat generation, unimodal particle distribution → clarity + consistency.
-
Touchless Grind: Insert portafilter → Scale automatically tares → Grinding starts after 1 second → Stops automatically at target weight. No button press required.
-
Grind-by-Time mode: Optional for larger quantities (e.g., filter coffee). Switch between modes by pressing and holding the Single/Double Shot symbol.
-
Perfect match with Ligre youn: Factory-configured settings. Together, both appliances create a seamless 600mm width (3mm gap) – perfect for standard kitchen countertops.
-
Silence: Housing designed for maximum sound insulation. Extremely smooth and quiet operation – perfect for open-plan kitchens.
-
Design Award Winner: iF Gold Award & German Design Award Gold . Designed by Relvãokellermann (Ana Relvão & Gerhardt Kellermann).
-
Made in DACH: Developed and manufactured in Austria (Gronbach Group, 60+ years of expertise).
The Coffee Coaching Club tip: Applied aroma chemistry
Clarity vs. Body – Why Flat Burrs Taste "Light": Flat burrs (like those in the siji) produce a
unimodal particle distribution – meaning most particles are of a very similar size. This leads to:
-
Faster water flow (fewer fines = less resistance)
-
Clearer aroma separation (each aroma component is extracted separately)
-
Lighter acidity (less bitterness, more fruitiness)
The sensory result: You get an espresso with
a defined, clear aroma structure and
pronounced brightness . The fruitiness of a
Wild Peach comes through here
in a perfectly distinct way – you taste peach, then apricot (not as "jam", but as individual notes).
For
classic blends like
Nutty Delight, this means: The nutty notes (hazelnut, almond) and the chocolatey notes (cocoa, caramel) remain separate and clear – you taste each component individually, instead of a "blended texture".
For
dark roasts like
Cozy Chocolate : The Flat Burrs bring out the
sweet, caramel notes without over-extraction → less bitterness, more balance.
Your ritual with the Ligre siji – 3 steps to perfection
-
Choose:
Set your desired weight (e.g., 18.0g for a double shot). The display will show single/double shot symbols.
-
Insert:
Insert the portafilter into the holder. The scale tares automatically. Patented eccentric mechanism allows angle adjustment for perfect positioning.
-
Grind:
Grinding starts automatically after 1 second (touchless grind). Quiet, fast (9-12 seconds for 18g), precise. The grinder stops automatically at exactly 18.0g (±0.1g).
Roastery recommendation
-
For those who love clarity: Try our Wild Peach . The flat burrs separate the flavors to the maximum – peach, jasmine, apricot can be tasted individually, not as a "jam".
-
For fans of classics: The Nutty Delight gets a clear nutty creaminess from the Flat Burrs (hazelnut, caramel, chocolate – all notes separate).
-
For texture fans: Cozy Chocolate – the Flat Burrs bring out maximum sweetness without over-extraction (less bitterness, more balance).
Technical specifications – Precision meets design
What you will receive – Scope of delivery
- Ligre Siji Coffee Grinder (Silver-Beige or Black-Matt)
- Portafilter holder with eccentric mechanism
- Dosing ring (funnel) for higher dosing quantities
- cleaning brush
- Ligre taha Blend (250g) – factory blended with siji + youn
- User manual (multilingual)
- Power cable (Swiss plug, 220-240V)
- 2-year warranty + support from the official Ligre partner
Who is Ligre siji suitable for?
You don't need the Siji if you prefer single dosing (using different beans daily). In that case, the Varia VS4 , Weber EG-1 , or Lagom P80 would be better for you.
But treat yourself to the Ligre siji if:
- You have (or plan to have) the Ligre youn . The two are perfectly matched – design, width (600mm together), factory settings.
- You want to grind-by-weight . If you don't feel like using a separate scale every day. The siji weighs automatically and stops precisely at your target weight (±0.1g).
- You value clarity and consistency . Flat burrs deliver defined, separate flavors (perfect for light, fruity roasts like Wild Peach).
- You prioritize design . The siji is a sculpture – minimalist, anodized aluminum, no visible screws. Design Award Winner (iF Gold + German Design Award Gold).
- You want comfort . Touchless grind (no button pressing), automatic taring, perfect dosage – every day, every time.
- You want a quiet grinder . The Siji is extremely quiet (housing designed for maximum sound insulation) – perfect for early morning hours.
- You're ready to invest in quality . The Siji costs approximately CHF 1280 (RRP €1180). That's high-end – but you get award-winning design + German engineering + Gronbach quality.
The truth is, the Ligre Siji isn't the most versatile grinder (single-dosing grinders like the Varia VS4 are more flexible). But it is the most elegant . It is the most precise . It is the most intuitive . If you're willing to invest in design and convenience—if you want a grinder that perfectly complements the Ligre Youn—then the Siji is the right choice.
Frequently asked questions about Ligre siji
How accurate is grind-by-weight?
Extremely precise. The Siji weighs to an accuracy of ±0.1 grams. If you set it to 18.0g, you get 18.0g (±0.1g). This precision has been verified with a KUKA robot over 50,000 grinding cycles – the accuracy remains even after the 50,000th grinding.
Why flat burrs instead of conical burrs?
Flat burrs deliver clarity and consistency . They produce a unimodal particle size distribution (all particles of similar size) → clear flavor separation, brighter acidity, and reproducible extraction. Perfect for light, fruity roasts (Wild Peach) and classic blends (Nutty Delight). Conical burrs produce more body/texture, but less clarity.
Can I use the Siji without Ligre Youn?
Yes! The Siji works with any espresso machine (58mm portafilter standard). However, the design and factory settings are perfectly tailored to the Youn. If you have a different machine, that's not a problem – but you'll lose the "perfect match" experience.
How does Touchless Grind work?
Insert the portafilter into the holder → the scale automatically tares → grinding starts automatically after 1 second → stops automatically at the target weight. No button press required. To stop grinding manually, simply touch the portafilter.
Can I grind by time?
Yes! For larger quantities (e.g., filter coffee), you can switch to grind-by-time. Long press the single/double shot symbol → menu opens → select grind-by-time.
How loud is the siji?
Very quiet. The housing is designed for maximum sound insulation. The Siji is significantly quieter than classic grinders – perfect for early mornings or open-plan kitchens.
How do I adjust the grind size?
Rotary dial on the back (stepless micrometric adjustment). IMPORTANT: The grind setting is not readable from the front – you have to look at it from above. If the Siji is placed next to the Youn (both are tall), this can be ergonomically awkward for shorter people or wheelchair users.
Can I use perfect water?
Absolutely. Combine the siji + youn with our Apax Lab Box Set (water mineralization for maximum flavor). Perfect setup: Ligre youn (machine) + Ligre siji (grinder) + Apax Lab (water). Together: Unbeatable.
Conclusion – Design meets precision
The Ligre Siji is the grinder for those who want design, comfort, and precision in one device. It's not the most flexible grinder (single-dosing grinders are more versatile), but it's the most elegant and intuitive.
Together with the Ligre Youn, it creates a seamless setup – 600mm width, perfectly matched, factory calibrated. This isn't a grinder you buy because you have to. This is a grinder you buy because you want to – because you love design, because you appreciate grind-by-weight, because you prioritize flat burrs and clarity.
This is German engineering that competes with Italian market leaders – but without the Italian nostalgia. This is the future of the coffee grinder – minimalist, intelligent, sustainable.
Experience design meets precision in Bern or Zurich
Complete your setup. The Ligre Siji is available now. Come by, try grind-by-weight, experience the clarity of flat burrs. No appointment necessary.
📦 Available immediately | 🏆 Design Award Winner (iF Gold & German Design Award Gold) | 🇨🇭 Service in Bern & Zurich
