What exactly does TDS tell us?

What exactly does TDS tell us?

Three Questions with Gabriela Parfait of The Good Sourcing

After eight years working for the French green coffee importing company Belco, Gabriela Parfait has launched a coffee-focused company called The Good Sourcing.  The new venture is intentionally small, although…


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 […]


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 […]


Test Drive: The Linea Micra Espresso Machine from La Marzocco

Ready to find out how La Marzocco’s Linea Micra measures up? Read on for our full Test Drive review!  BY VASILEIA FANARIOTISENIOR ONLINE CORRESPONDENT Photos courtesy of Vasileia Fanarioti  The Linea Micra espresso machine by La Marzocco is the newest addition to their impressive line of home espresso machines. I was lucky to get my […]

What exactly does TDS tell us?

Conflict in the Red Sea: Why coffee roasters need to prepare for shipping delays

Like many other industries, conditions in the coffee supply chain can change quickly, and in turn, have a huge impact on all actors and stakeholders. Price volatility is one of the more pertinent – which is influenced by many factors. These include fluctuations in supply and demand, extreme or unexpected weather events, global economic downturn, […]


Lvl Up Coffee Hits High Scores In Normal, Illinois

Specialty coffee in the central Illinois town of Normal has reached a new stage of quality with the opening of Lvl Up Coffee Bar. Brought to life by coffee roaster…


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 […]


What I Learned from My First Tea Ceremony

After taking in a brief moment of a tea ceremony in Thailand, I finally had the chance to participate in the full experience recently in Malaysia. BY TANYA NANETTI SENIOR ONLINE CORRESPONDENT Photos by Tanya Nanetti In the years that I worked as a barista in a café, tea always played a marginal role in […]

What exactly does TDS tell us?

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 […]


Florencia y Fortunata: A Café Empowering Women in Peru

The Cusco café, founded by Carolina Peralta Minaya, sells coffee from women producers and features women demonstrating their skills behind the bar. BY JORDAN BUCHANANBARISTA MAGAZINE ONLINE Photos courtesy of Carolina Peralta Minaya Traceability, sustainability, and conscientiousness are key values pervading the specialty-coffee trade. For many consumers and traders, these values inform their decision to […]


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 […]


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 exactly does TDS tell us?

What exactly does TDS tell us?

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 exactly does TDS tell us?

So TDS Stands for total dissolved solids and is used commonly by the Coffee community to measure "extraction yield" in percentages, or similiar.

The meter itself, as far as I know, measures the samples conductivity, especially focussing on dissolved/dissociated metal cations. A review on another tool, which may be more interesting because of it's higher specificity, has been done by James Hoffmann (the Coffein Meter).

My point is, that in my mind, metal cations could as well be from the metal used in boiling the water, burrs grinding the (slightly acidic Coffee), paper Filters, and other stuff. Of course, you probably could calibrate your device with such data, tho I wonder how much these variables are dependend on external factors, therefore a calibration being close to useless. Also, I don't see anybody publishing their calibration results…

So, what exactly does a TDS Meter tell us?

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What exactly does TDS tell us?

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 exactly does TDS tell us?

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