What exactly does TDS tell us?

What exactly does TDS tell us?

The Origin Story of Turtle Island Coffee in Vancouver, B.C.

A new Indigenous-owned coffee company based in Vancouver, British Columbia, called Turtle Island Coffee has launched with the goal of exposing more people to high quality specialty coffee and Indigenous…


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 […]


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 […]


Joven and Atucún Join Forces to Empower Young Farmers

The two brands have collaborated to create a unique coffee bar and support young farmers in the coffee and cacao industries. BY VASILEIA FANARIOTISENIOR ONLINE…

What exactly does TDS tell us?

In Tbilisi, Parsek1 Merges Comic Books with Specialty Coffee

We take a look at how this innovative café has changed the face of comics and coffee in the capital of Georgia. BY VASILEIA FANARIOTISENIOR ONLINE CORRESPONDENT Photos courtesy of Parsek1 When it comes to coffee and comic books, Japan is a longtime leader in the field. Manga cafés have been around for decades, combining […]


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….


Ukraine’s Soloway Coffee Opens First US Shop in Chicago

A specialty coffee roasting company based in western Ukraine called Soloway Coffee (Instagram link) this week opened its first location in the United States. Beans roasted in Ternopil, Ukraine, using…


The Slingshot Chalice Puts a New Spin on Espresso Dosing

Hong Kong and Australia-based coffee equipment maker Slingshot Technology recently launched the Chalice Distributor Cup, a multipurpose espresso preparation tool for baristas. Displayed in its final production form at the…

What exactly does TDS tell us?

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 […]


The Barista League Releases New Competition Calendar

Presenter of sustainable, accessible events, The Barista League plans to hold 12 competitions in 10 countries in the months ahead. BY J. MARIE CARLANBARISTA MAGAZINE ONLINE Photos courtesy of The Barista League The Barista League has officially announced its event roster for the next year. Last year saw 10 Barista League events worldwide, and the […]


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 […]


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 […]

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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