The Brewing Variables of Extraction

The Brewing Variables of Extraction

PRF El Salvador announces speakers and panellists

Following a call for applications in October 2022, Producer & Roaster Forum (PRF) has announced its first speakers and panellists for PRF El Salvador. The two-day forum will be held on 16 and 17 March 2023 at the Salamanca Exhibition Centre in San Salvador. The event is set to return to El Salvador after it […]


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…


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 […]


Study Shines New Light on the Complex Arabica Coffee Genome

Researchers in Italy say they’ve shed new light on arabica coffee’s large and complex genome, which may ultimately help breeders seeking desirable traits such as high quality and disease resistance….

The Brewing Variables of Extraction

10 Minutes With Keith Hawkins of the Color of Coffee Collective

We dive into everything you need to know about the Color of Coffee Collective’s mission, initiatives, and the upcoming second edition of the Symposium Experience.  BY VASILEIA FANARIOTISENIOR ONLINE CORRESPONDENT Photos courtesy of Keith Hawkins  Today at Barista Magazine Online, we sit down for a chat with Keith Hawkins, a passionate entrepreneur and advocate for […]


Florencia y Fortunata: A Café Empowering Women in Peru

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A Look at Digital Coffee Future’s Digital Origin Education Program

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Test Drive: Update Your Grinding With More Comandante Grinder Accessories

The popular hand grinder has more to offer with a new line of tools and accessories now available. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Feature photo by Tanya Nanetti To brew the perfect cup of coffee, it’s important to choose the right coffee equipment. One essential is a reliable coffee grinder. Most coffee lovers start with a […]

The Brewing Variables of Extraction

Don’t Skip the Budding Specialty-Café Culture in Quito, Ecuador

Introducing the specialty cafés of Quito, a city worth exploring on your coffee quest. BY JORDAN BUCHANANSPECIAL TO BARISTA MAGAZINE Featured photo courtesy of Stratto When traveling across South America, Ecuador can be forgotten between the high profiles of Colombia and Peru. Similarly, coffee from Ecuador may be overlooked due to its giant neighbors, including […]


Thread Coffee Roasters Opens Tailor-Made Roastery in Baltimore

The interwoven actions of Thread Coffee Roasters in Baltimore are finding exponentially more space this week with the grand opening of a brand-new production roastery and training lab. The worker-owned…


Design Details: Brewing Reinvented at ULA Café in Melbourne

Welcome to Design Details, an ongoing editorial feature in Daily Coffee News focused on individual examples of coffee shop architecture, interior design, packaging design or branding. If you are a coffee…


U.S. Coffee Championships 2023 Baltimore Qualifiers Results

More than 100 competitors brought their talent to Baltimore to take part in six competitions, and 63 will progress to nationals in April. BY NATE KLOCKBARISTA MAGAZINE ONLINE Photos by Matthew Temple courtesy of the U.S. Coffee Championships Last weekend, my hometown welcomed the U.S. Coffee Championships (USCC) qualifiers with the charm only Baltimore could […]

The Brewing Variables of Extraction

The Brewing Variables of Extraction

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...

The Brewing Variables of Extraction

One major "question" for me lately (which is more like a compilation of many smaller questions) has been, if we mix and match the brewing variables which make up extraction, what kind of equivalence or significance can be attributed between the different ones for a particular brew, and why.

For instance, all of these (to name just a few) can increase extraction:
– Longer contact time
– Finer grind
– Higher water temperature

So a question is, let's say you increase contact time (like in an immersion brew) to elevate extraction yet grind coarser to compensate, the question is why would this be preferable to grinding finer but reducing contact time? If both of these elements can balance extraction and produce a balanced brew, which one should be chosen and are they truly equivalent? I understand that certain brewing methods preclude this possibility like in Espresso you simply must grind very fine and if grinding even remotely out of that range you will generate no pressure due to lack of puck resistance, or for Pour Over, if you grind too fine you also increase contact time by virtue of the brewing method, but these specifics are not as important as the general concept here being, swapping different methods of increasing or decreasing extraction to produce a balanced brew – which should be used and why?

To give an actionable example – with my Moka Pot, I can grind finer and start with a higher water temperature which reduces contact time (due to the brew finishing much earlier), or I can grind coarser and start with colder water to increase contact time. I've tried both of these methods and they both work to create balanced brews – the question is which method should be used and why, and is there really any guiding principles here other than "just cup for the rest of your natural born life and draw your own conclusions"?

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The Brewing Variables of Extraction

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.

The Brewing Variables of Extraction

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