Used coffee grounds are a greener way to dye fabrics brown

Used coffee grounds are a greener way to dye fabrics brown

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 […]


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 […]


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…


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 […]

Used coffee grounds are a greener way to dye fabrics brown

Competition, Cold, and More from the 2024 U.S. Coffee Competition Qualifiers in Houston

The first round of qualifiers for the 2024 season of the United States Coffee Competitions featured the U.S. Barista, Cup Tasters, and Roasters qualifying competitions. BY KATE VAN PETTENSPECIAL TO BARISTA MAGAZINE Photos courtesy of U.S. CoffeeChamps The first round of qualifiers for the 2024 season of the United States Coffee Competitions took place January […]


How to Make the Best Coffee at Home By James Hoffmann: Book Review 

James Hoffmann’s new book, How to Make the Best Coffee at Home, is finally out, and is the perfect guide for both professionals and amateurs. BY TANYA NANETTISENIOR ONLINE CORRESPONDENT Photos by Tanya Nanetti James Hoffmann is one of the most recognizable people in the world of specialty coffee. His YouTube channel is both informative […]


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…


Interest in coffee & health is rising – what do consumers need to know?

There is a wealth of scientific research available about the many health benefits of coffee – as well as the undesirable side effects of drinking too much. But like all fields of science, research about the impact of drinking coffee on human health is ever-changing as we uncover new findings.  Interestingly, the continuous discovery of […]

Used coffee grounds are a greener way to dye fabrics brown

Book Review: From Nerd to Pro, by Patrik Rolf

From Nerd to Pro: A Coffee Journey is an autobiography by roaster, café operator, and coffee competitor Patrik Rolf sharing his coffee journey. BY TANYA NANETTI SENIOR ONLINE CORRESPONDENT Featured photo by Tanya Nanetti I’ve read plenty of books on coffee over the years: manuals on how to brew great coffee at home, books on […]


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…


Miami-Made Panther Coffee is Popping Up in Manhattan

Beloved Miami specialty coffee company Panther Coffee is making its first major New York City showing with the opening of a popup shop in Soho. With a soft opening scheduled…


4 Cool Cafés to Try Out in Kuala Lumpur

The Malaysian capital is often visited in a hurry, but visitors who take the time to explore will discover a welcoming city, thanks in part to its friendly specialty cafés. BY TANYA NANETTI SENIOR ONLINE CORRESPONDENT Photos by Tanya Nanetti Kuala Lumpur, the capital of Malaysia, is often a stopover on vacations, quickly left behind […]

Used coffee grounds are a greener way to dye fabrics brown

Used coffee grounds are a greener way to dye fabrics brown

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...

Used coffee grounds are a greener way to dye fabrics brown

Researchers find way to dye clothing with coffee grounds

When it comes to things you can do with coffee, the list is seemingly endless — you can use it to help in your garden, to stain wood, to clean, and to even keep bugs away in your yard. Now, you can add “dye clothing” to this ever-growing list. 

A birds-eye view of coffee grounds sitting inside a white coffee filter

Changhyun “Lyon” Nam of Iowa State University started experimenting with coffee grounds and dyeing pieces of fabric. Since the textile industry uses more than 2 million tons of chemicals and synthetic dyes annually, researchers are looking for cleaner and greener alternative methods. 

Nam started using coffee grounds to dye fabric by drying them for three days and then boiling them with purified water to extract the dye. He then tested it on cotton, linen, rayon, silk, and polyester. He used different mordants (these help dye bond to fabrics) and created a variety of brown shades.

There are many advantages to natural dyes, but one of the biggest challenges is to prevent the color from fading and replicating the color over and over again. There’s still more research to be done before natural dyes are an option for mass production, but this is definitely a step in the right direction.

Related: Our chocolate maker used coffee to stain wood in their new space

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Used coffee grounds are a greener way to dye fabrics brown

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.

Used coffee grounds are a greener way to dye fabrics brown

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