What exactly does TDS tell us?

What exactly does TDS tell us?

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 […]


Know Your Sweeteners: Honey: Part Two

We continue our deep dive into honey, bringing to light environmental and animal rights concerns related to the product, and how the industry is addressing them. BY EMILY JOY MENESESBARISTA MAGAZINE ONLINE Feature photo via Unsplash This week we started our discussion of honey, uncovering how it’s produced, the differences between varieties of honey, and […]


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. […]


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 […]

What exactly does TDS tell us?

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 […]


Congrats to the Top-Ranking Qualifiers at U.S. CoffeeChamps Denver

Dozens of coffee professionals competed at qualifiers this weekend in Colorado for coveted spots at the U.S. Coffee Championships next month. BY J. MARIE CARLANBARISTA MAGAZINE ONLINE Cover photo by J. Marie Carlan For competitive coffee professionals in the USA, the U.S. Coffee Championships are the place to be. Over the weekend, the second USCC […]


Weekly Coffee News: EUDR and Africa + More Celebrity Coffee

Welcome to DCN’s Weekly Coffee News. Keep up with all the latest coffee industry stories and career opportunities by subscribing to DCN’s newsletter. Tell our editors about your news here. Report: Small-Scale Farmers in…


10 Minutes With Helena Oliviero: Part One

We talk with coffee champion and Q Grader Helena Oliveriero about her career, her life in Colombia, and what it means to be a young woman in the male-dominated coffee world.   BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Featured photo courtesy of Helena Oliviero Helena Oliviero, originally from Tuscany, Italy, is 28 years old, but already she […]

What exactly does TDS tell us?

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 […]


Understanding the Process: Anaerobic Processing

We continue our series on fermentation with a look at the anaerobic process, which has quickly become a favorite in cafés worldwide. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Photos courtesy of Bram de Hoog for Ally Coffee A simple cup of well-brewed coffee can have endless variations of flavors and aromas. These are closely linked to […]


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 […]


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 […]

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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