What is WDT in Espresso? We Talked to Its Creator, John Weiss

What is WDT in Espresso? We Talked to Its Creator, John Weiss

An In-Depth Look at Gruppo Cimbali’s Coffee Technician Wheel

The Coffee Technician Wheel is a new tool that helps technicians understand the complexity of coffee extraction. BY VASILEIA FANARIOTISENIOR ONLINE CORRESPONDENT Photos courtesy of Edgardo Ferrero and Espresso Academy Coffee technicians are responsible for a complex set of tasks related to the production and extraction of coffee. They manage customer requests and need to […]


Brewing at Home and On the Road with Darrin Daniel

We check in with the Cup of Excellence executive director to learn his current coffee-brewing habits. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Featured photo by Emre via Unsplash Brewing coffee is, for many coffee professionals, more than just a job.   They usually brew coffee every day, both for themselves and their customers. Perhaps they do it […]


Get Ready for The Barista League’s 2024 Season

The Barista League has announced 12 competitions across four continents. BY J. MARIE CARLANBARISTA MAGAZINE ONLINE Photos courtesy of The Barista League When The Barista League announces new events, it’s worth paying attention! This year, the schedule will be organized by geographic location, bringing together coffee people in various communities. At The Barista League in […]


Coffee News Recap, 20 Jan: Last chance to apply for PRF El Salvador Mayorga Scholarship and volunteer positions, World of Coffee Dubai attracts more than 12,000 visitors & other stories

Every Friday, Perfect Daily Grind rounds up the top coffee industry news from the previous week. Here are this week’s stories. Mon, 16 Jan World of Coffee Dubai 2023 attracts more than 12,000 visitors from 48 countries. The event, which was held at the Dubai World Trade Centre, also included over 180 exhibitors and 36 […]

What is WDT in Espresso? We Talked to Its Creator, John Weiss

4 Cool Cafés to Try Out in Bologna

Bologna, the Italian city home to the world’s oldest university, is traditionally famous for its food and drink—and it has some stellar specialty cafés. BY TANYA NANETTI SENIOR ONLINE CORRESPONDENT Featured photo by Annie Spratt via Unsplash Bologna is home to the oldest university in the world and is the unofficial “capital“ of the porticos […]


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 […]


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,…


Out Now: The February + March 2024 Issue of Barista Magazine!

In our new issue we feature Lisa Lawson from Glasgow, Scotland, take a look at the newest grinders, explore spring drink inspiration, see how more women are getting involved in coffee tech, and much more! BY SARAH ALLENBARISTA MAGAZINE We’re stoked to announce the release of the February + March 2024 issue of Barista Magazine, […]

What is WDT in Espresso? We Talked to Its Creator, John Weiss

Coffee News Recap, 2 Feb: Applications open for Australia’s Richest Barista 2024, De’Longhi reports 4.6% revenue increase after La Marzocco move & other stories

Every Friday, Perfect Daily Grind rounds up the top coffee industry news from the previous week. Here are this week’s coffee news stories. The word of the week is: expansion. Mon, 29 Jan AeroPress launches limited-edition Clear Pink brewer. The coffee brewer is made from the same Tritan material used in the standard Clear model. […]


Cerrado Mineiro Green Coffee Auction Launching Online Jan. 29

From the heart of the Brazilian coffee lands, the Cerrado Miniero green coffee auction is for the first time happening globally online this year. Taking place Jan. 29-Feb. 3, the…


Miami-Made Panther Coffee is Popping Up in Manhattan

Beloved Miami specialty coffee company Panther Coffee is making its first major New York City showing with the opening of a popup shop in Soho. With a soft opening scheduled…


Exploring the Potential of Drones in Coffee Production 

New drone technology has the potential to revolutionize coffee farming from the air. BY VASILEIA FANARIOTISENIOR ONLINE CORRESPONDENT Cover photo by David Henrichs via Unsplash In an ever-evolving technological landscape, coffee producers have begun turning to drones in an attempt to increase efficiency and operations. These unmanned aerial vehicles (UAVs) offer a wide range of […]

What is WDT in Espresso? We Talked to Its Creator, John Weiss

What is WDT in Espresso? We Talked to Its Creator, John Weiss

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...

What is WDT in Espresso? We Talked to Its Creator, John Weiss

the Weiss Distribution Technique

Along with the recent boom in home espresso preparation has come an associated flood of accessories to support the craft, including many variations of something called a WDT tool. WDT…

What is WDT in Espresso? We Talked to Its Creator, John Weiss

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.

What is WDT in Espresso? We Talked to Its Creator, John Weiss

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