What exactly does TDS tell us?

What exactly does TDS tell us?

From Malawi to Edinburgh: The MF Coffee Project

We take a trip from North Carolina to Northern Malawi to Edinburgh, exploring the roots, roasts, and impact of the MF Coffee Project. BY VASILEIA FANARIOTISENIOR ONLINE CORRESPONDENT Photos courtesy of the MF Coffee Project In the quaint village of Manchewe, Northern Malawi, a story unfolded when Cameron Mcallister made the life-altering decision to relocate […]


Bypass coffee brewing: How can it improve extraction?

There is a lot of science to brewing coffee. Whether knowingly or unknowingly, we trigger – and try to control – an almost endless number of chemical reactions to achieve the perfect extraction. To do so, we have to tweak different variables – such as grind size, temperature, and coffee-to-water ratio – to get the […]


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 […]


Toronto’s Pilot Coffee Roasters Acquiring Bridgehead Coffee for $3.6 Million

Toronto, Ontario-based specialty coffee roaster and retailer Pilot Coffee Roasters is acquiring Ottawa-based Bridgehead Coffee in a deal worth approximately US$3.6 million.  Bridgehead, which has 21 coffee shop locations throughout…

What exactly does TDS tell us?

Toronto’s Pilot Coffee Roasters Acquiring Bridgehead Coffee for $3.6 Million

Toronto, Ontario-based specialty coffee roaster and retailer Pilot Coffee Roasters is acquiring Ottawa-based Bridgehead Coffee in a deal worth approximately US$3.6 million.  Bridgehead, which has 21 coffee shop locations throughout…


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…


The 2023 Specialty Coffee Transaction Guide Has Landed

The 2023 edition of the Specialty Coffee Transaction Guide (SCTG) guide went live today, providing actors throughout the coffee chain a data-driven tool for green coffee price discovery. The full…


Design Details: A Petit Le Café Coffee in Midtown Manhattan

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…

What exactly does TDS tell us?

Coffee News Recap, 26 Jan: Researchers create new genetic map to “future proof” arabica production, UAE & Italian Coffee Champions crowned at WoC Dubai and SIGEP & 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: competitions. Mon, 22 Jan Timemore launches crowdfunding campaign for upcoming Millab E01 portable electric coffee grinder. The wireless electric coffee grinder features a 5,000 mAh lithium battery […]


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, […]


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. […]


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, […]

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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