Vibration as a means of reducing channelling in espresso

Vibration as a means of reducing channelling in espresso

10 (More) Minutes With Helena Oliviero

Today we continue our conversation with Helena Oliviero about her coffee career and life on a Colombian finca. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Photos courtesy of Helena Oliviero Barista Magazine: Let’s talk about living on a Colombian coffee farm, Finca Palma Roja. How do you spend your days? What’s usually happening on a busy coffee […]


Cup of Excellence to Offer El Salvador Immersion Program

The immersion experience will allow participants to grow their knowledge on Salvadoran culture and coffee varieties. BY J. MARIE CARLANBARISTA MAGAZINE ONLINE Photos courtesy of Cup of Excellence Cup of Excellence is launching a new learning opportunity in 2024: the Origin Immersion Program, to be held in El Salvador from February 26 to March 5. […]


Three Questions with IWCA Executive Director Blanca Castro

When International Women’s Coffee Alliance (IWCA) Executive Director began her job years ago at the Guatemalan coffee association Anacafé, she knew next to nothing about coffee.  “I just pretended that…


3 All-Women Coffee Roasting Companies that Are Changing the Game

The world of specialty coffee is still largely governed by men, but these all-female specialty-coffee roasters are helping to close the gender gap. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Feature photo courtesy of Lot Zero/7Gr As is the case for many commercial sectors, the world of specialty coffee continues to display gender disparity along the entire […]

Vibration as a means of reducing channelling in espresso

Is the World Barista Championship too exclusive & expensive for competitors?

There are a number of competitions in specialty coffee designed to test the skills and knowledge of industry professionals. However, many consider the World Barista Championship (WBC) to be one of the most esteemed and highly regarded events, acting as a platform to showcase excellence in the barista profession. There are many reasons to celebrate […]


Understanding the Process: Carbonic Maceration

Continuing our series on coffee processing, we learn about carbonic maceration—a unique, newer processing method. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Photos courtesy of Cafe Imports Editor’s note: Check out more entries in our “Understanding the Process“ series here. The rise of the specialty-coffee scene has helped many people understand that talking about coffee as something […]


Understanding the Process: Koji Fermentation

Continuing our series on coffee processing, we learn about koji fermentation, a unique process usually associated with the brewing of sake. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Photos courtesy of Forest Coffee If brewed properly, a cup of coffee can offer countless variations of flavor and aroma. The quality and complexity of these attributes depend on many different […]


Know Your Sweeteners: Honey: Part Two

We continue our deep dive into honey, bringing to light environmental and animal rights concerns related to the product, and how the industry is addressing them. BY EMILY JOY MENESESBARISTA MAGAZINE ONLINE Feature photo via Unsplash This week we started our discussion of honey, uncovering how it’s produced, the differences between varieties of honey, and […]

Vibration as a means of reducing channelling in espresso

Ethos Agriculture’s Journey from Vision to Impact in Coffee Sustainability: Part Two

In the second half of this article, we discover how the Coffee Barometer attempts to bridge the gap between discourse and action, envisioning a sustainable…


Medium-sized farms play an important role in specialty coffee

For many consumers and industry professionals, specialty coffee and direct trade are inextricably linked. Building strong and mutually beneficial working relationships between producers and roasters is often seen as a cornerstone of establishing a truly sustainable supply chain. So with this association between specialty coffee and direct trade, there can be a narrative of smaller-sized […]


Serving Coffee in the Epicenter

The Turkish specialty-coffee community is coming together to support earthquake relief. BY MICHAEL BUTTERWORTHSPECIAL TO BARISTA MAGAZINE ONLINE When Niji Coffee went live on Instagram,…


4 Cool Cafés to Try Out in Kuala Lumpur

The Malaysian capital is often visited in a hurry, but visitors who take the time to explore will discover a welcoming city, thanks in part to its friendly specialty cafés. BY TANYA NANETTI SENIOR ONLINE CORRESPONDENT Photos by Tanya Nanetti Kuala Lumpur, the capital of Malaysia, is often a stopover on vacations, quickly left behind […]

Vibration as a means of reducing channelling in espresso

Vibration as a means of reducing channelling in espresso

minimum dose size?

Jan 31, 2024 |

I use the Hario switch to brew my coffee and am trying to reduce my caffeine consumption. Hence I would like to brew smaller cups of coffee. I am currently using 10g of coffee with 160g of water. (1:16 Ratio) I am wondering if there is a minimum amount of coffee...

Vibration as a means of reducing channelling in espresso

If a group head vibrated in a similar way to how the Mythos 1 does when grinding, would this break apart the channelling structures that inevitably form in a puck? Vibration always tends to redistribute a volume, but the question is whether that would be the case when dealing with >5 bars of pressure in a saturated mass. It could call for a higher or lower frequency or for oscillation on the Z or X/Y axis?

Definitely an impractical thing to integrate into espresso!

I can also promise you I don't wanna hear my machine scream as if it was constipated while pulling a shot ( I'm lying to you)

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Vibration as a means of reducing channelling in espresso

Perfect Little Beans

Chinmey Hill Coffee uses specialty-grade beans with zero primary defects (such as black beans or sour beans) and less than five secondary defects (such as broken beans). This is important because primary defects will greatly affect the taste of the coffee. Having zero defects allows the coffee to be the most optimal flavor.

Window for Optimal Flavor

Chimney Hill Coffee ships our coffee the same day it was roasted, so you will receive it before it enters the window of optimal flavor.  This means you’ll never miss the opportunity to enjoy the coffee’s peak flavor.

Coffee Ratings

Coffee undergoes many scoring processes by professionals who achieved their Q Grader certification. Coffee is first graded when it’s green. If there are defects the coffee is determined to be “not-specialty grade”. For those coffees that pass green grading, they are sample roasted and cupped. (Cupping is the official term for critically tasting and scoring coffees. The official cupping form is standard worldwide, and where the 100-point scoring system comes from.) A coffee’s dry fragrance, wet aroma, flavor, aftertaste, body, acidity, balance, and overall impression are taken into consideration while uniformity issues and defects, will lower the overall score.

Specialty Coffee

Specialty coffee, coined by Erna Knutsen in 1974, refers to a coffee that receives a quality grading score of 80 percent or higher. While “premium” or “gourmet” seem like they’re synonymous with “specialty,” they simply are marketing terms with no defined standards. Specialty coffees are grown in specific and ideal micro-climates, and have distinctive and unique flavor profiles, with little to no defects.

Third-Wave Coffee

We’re currently in the third wave of coffee. The first wave of American coffee put pre-ground, vacuum-sealed cans in kitchens across America. The second wave started with the late ‘60s introduction of Peet’s coffee (by Alfred Peet) through the proliferation of Starbucks. The third wave of coffee focuses on origin transparency, nuanced flavors, and artisan roasting. The term “third wave” is synonymous with specialty coffee.

Vibration as a means of reducing channelling in espresso

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