Option-O
Option-O | 98mm Mizen Flat Burrs
Best precision upgrade for discerning home baristas seeking superior flavor clarity.
Elevate your coffee brewing with the Option-O 98mm Mizen Flat Burrs. These precision-engineered burrs offer two distinct grind profiles: Omni for balanced espresso and pour-over, and Espresso for heightened sweetness and a velvety mouthfeel. Crafted from hardened stainless steel with a proprietary finishing process, they enhance cup quality and minimize fines for a cleaner taste. Suitable for all roast levels, these burrs unlock the full flavor potential of your beans, ensuring exceptional results whether you're brewing at home or in a professional setting.
$194.00
Owner Satisfaction
4.7
/ 5
Category Rank
15
/ 879
#15 in Coffee Grinder Accessories
Price vs Category Average
+170%
Above average
Material
Hardened stainless steel
/ Hardened stainless steel
Who it's for
- Specialty coffee lovers seeking maximum flavor clarity and sweetness
- Home baristas prioritizing uniform extraction and high-yield brewing
- Heavy users needing long-lasting, durable professional-grade equipment
Who should skip it
- Budget-conscious hobbyists avoiding expensive aftermarket upgrades
- Traditional espresso drinkers preferring heavy, syrupy body profiles
- Owners of standard grinders lacking 98mm compatibility
Performance breakdown
Flavor Clarity
Proprietary finishing minimizes fines for exceptionally clean and transparent cup profiles.
Grind Consistency
Precision flat grinding ensures uniform particle distribution for repeatable extraction results.
Versatility
Dual profile options bridge the gap between modern espresso and pour-over.
Build Durability
Hardened stainless steel construction stands up to heavy professional and home use.
Sweetness Potential
Espresso-specific geometry highlights complex sugars and creates a velvety mouthfeel.
Roast Adaptability
Engineered to perform reliably across light, medium, and dark roast spectrums.
Key Specs
Material
Hardened stainless steel
Size
98mm flat burr set
Precision
Flat ground to a 0.005mm (5 micron) specification
Finish
Proprietary treatment process for unique surface properties
Engineered in Australia
Made in China
Accessory Type
Replacement Burr Set
Burr Shape
Flat
Features
- Two distinct grind profiles
- Omni burrs balance clarity and body
- Espresso burrs offer heightened sweetness
- Proprietary finishing enhances cup quality
- Low fines production for clean taste
- Suitable for all roast levels
- Precision flat ground for superior consistency
- Engineered for exceptional results
What customers say
The Option-O 98mm Mizen Flat Burrs consistently elicit an overwhelmingly positive response from the discerning coffee community, particularly among filter coffee enthusiasts and professionals. Customers frequently describe the Mizen burrs as a transformative upgrade, elevating their brewing experience to new heights. The most prominent theme in sentiment revolves around the unparalleled clarity and separation of flavors achieved in the cup. Users report discovering nuanced notes and complexities in their coffee that were previously undetectable, leading to a profound appreciation for their beans. The grind consistency is lauded as exceptional, contributing to remarkably even extractions and a noticeable increase in sweetness and overall balance in the brew. Beyond flavor, the Mizen burrs are praised for their ability to produce a clean, vibrant cup with an enhanced mouthfeel, often described as silky or juicy. While the investment is significant, the consensus among users is that the performance justifies the premium price, positioning these burrs as a true endgame component for many. The build quality, typical of Option-O products, also receives high marks, assuring users of durability and precision. While primarily celebrated for filter applications, the Mizen's precision grind also offers intriguing possibilities for light roast espresso, though its true mastery shines in pour-over and other manual brew methods. Overall, the sentiment reflects a deep satisfaction and excitement, with customers feeling they have unlocked a new dimension in their coffee journey.
Know before you buy
The Omni burrs are designed for versatility, providing a balanced profile that works well for both espresso and pour-over brewing. The Espresso burrs are specifically optimized to emphasize sweetness and create a thicker, more velvety mouthfeel in your shots.
These burrs are designed for 98mm flat burr systems, but compatibility depends on your specific grinder's mounting geometry and alignment capabilities. We recommend verifying your grinder's internal clearance and mounting requirements before purchase.
The Mizen burrs are precision-ground to a 5-micron tolerance and feature a proprietary finish that significantly reduces the production of fine particles. This results in a cleaner cup with better flavor separation and less bitterness.
Like most high-end precision burrs, you may notice a short break-in period where the grind consistency and flavor profile stabilize. While they perform well out of the box, you will likely find the cup quality settles and improves after running a few pounds of coffee through them.
Yes, the Omni profile in particular is excellent for light roasts, as it helps extract nuanced acidity and floral notes while maintaining a clean, sediment-free cup. Their precision geometry allows for the high extraction yields required to get the best out of modern, lightly roasted beans.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$194