Whether you’re a seasoned barista or a coffee enthusiast brewing at home, you’ve probably encountered a frustrating issue: inconsistent coffee extraction. This can happen when coffee grounds clump together or don’t distribute evenly in your portafilter or basket. These uneven clumps create channels where water flows too quickly, over-extracting some grounds and under-extracting others. The result? A cup that’s either too bitter, too sour, or just lacks that perfect balance we all crave.

Why Shake Your Coffee Grounds?

Here’s where Iris steps in. Shaking your coffee grounds before brewing ensures they’re evenly distributed, breaking up clumps and creating a uniform bed of coffee and densifies your grounds. This evenness and densification is critical for achieving a consistent extraction—where every ground contributes equally to the brew. Think of it as setting the stage for water to do its best work, delivering a rich, flavorful cup every time.

But why shake instead of stir or tap? Stirring can sometimes lead to uneven compaction, while tapping may not break up those stubborn clumps. Shaking, on the other hand, naturally distributes the grounds without over-compacting them, thanks to the gentle, even motion Iris is designed to provide.

The Science Behind Better Coffee

When coffee grounds are evenly distributed, water flows through them at a steady rate, extracting the ideal flavors from every particle. This prevents the dreaded “channeling” effect that leads to weak or uneven brews. The result is a cleaner, more balanced taste—whether you’re brewing espresso, pour-over, or even using your trusty moka pot.

How Iris Simplifies Your Routine

Iris isn’t just about better coffee; it’s about a smoother brewing experience. With its compact design, it fits seamlessly into your coffee-making routine without taking up extra space. And let’s not forget—it’s a mess-free solution that keeps your countertops clean while streamlining your prep. No more second-guessing your technique or dealing with inconsistent results.

We’re so excited for you to try Iris and see the difference it makes in your coffee journey. Stay tuned to our blog for more brewing tips, product updates, and the science of coffee—because at Repertoire Coffee, we believe better tools mean better coffee.

Cheers to better coffee,
Sebastian from Repertoire