Quantum Coffee Roasters

Quantum Coffee Roasters Coffee Shop & Roasters || Cardiff Centre & Bay || Small farmers & Women producers || Bringing positive change one bean at a time.
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18/07/2026

OUR THIRD ARTIST EDITION COLLAB!🤩

As an independent, art-loving and slightly quirky Cardiff-based coffee shop, we’re packed with creatives on a daily basis (and we have several on our staff as well).

So we decided to team up with some of our favourite local art-makers to celebrate and highlight their incredible work.

Our new artist edition design is by the wonderful

Hannah is a Wales based mixed media artist and illustrator. She creates textured art, capturing joyful energy through lines, layers and expressive marks. Taking inspiration from everyday life, she explores nature, food and still life through pastels, paint, ink and pencil.

Hannah’s work has been featured in British Vogue. You can shop limited edition art prints and original art from her website.

Follow Hannah on Instagram to see behind-the-scene for how she creates her colourful artworks!

Spread the love, grab a cup, grab some beans… Available in both shops and online! 🤩

16/07/2026

ARTIST EDITION - HANNAH DURHAM

Round 3: SUMMER 2026

Our THIRD artist edition design is by the wonderful Hannah Durham. Hannah is a Wales based mixed media artist and illustrator. She creates textured art, capturing joyful energy through lines, layers and expressive marks.

Grab a bag online or from our retail shelves!

14/07/2026

NEW ARTIST CUPS! We’re super super excited to launch our Summer 2026 Artist Edition, this time with a gooooorgeous design from the amazing

Now available in both our Cardiff shops! 🤩

10/07/2026

🇨🇴Colombia - Bourbon Aji - Finca Patio Bonito (Carlos & Paola Teujillo)

The cup
☕️Cooked apricot, fresh red wine and dark chocolate with mild brown sugar flavour. Juicy acidity and mellow delicate fruit-like sweetness.

Process: washes
Altitude: 1700 masl.
Varietal: Bourbon Aji

Grab a bag online or from our retail shelves! Only a small batch of these so you may want to hurry up! Once they’re gone, they’re gone!

🇨🇴We’re excited to introduce these truly special beans from Finca Patio Bonito, produced by father-and-daughter duo Carl...
08/07/2026

🇨🇴We’re excited to introduce these truly special beans from Finca Patio Bonito, produced by father-and-daughter duo Carlos and Paola Trujillo.

THE CUP
☕ Tasting Notes: Cooked apricot, fresh red wine, and dark chocolate with mild brown sugar flavors. Juicy acidity and mellow delicate fruit-like sweetness.
📍 Farm: Patio Bonito
🧼 Process: Washed
🌱 Altitude: 1700 masl.
🌾 Varietal: Bourbon Aji

Patio Bonito is a hardworking and innovative family-run farm in Caldono, Cauca.

Founder Carlos Arturo Trujillo has been a coffee farmer for almost 50 years, and he says, “It has been a long road, but in the end, it is very satisfactory.”

This lot is the rare Bourbon Aji variety, grown alongside 12 other cultivars across the family’s 11-hectare farm. Every stage of production reflects the Trujillos’ commitment to quality, sustainability and constant learning.

“The best legacy we can leave to our children is love, knowledge, and a planet in which to live.”

THE CUP
☕ Tasting Notes: Cooked apricot, fresh red wine, and dark chocolate with mild brown sugar flavors. Juicy acidity and mellow delicate fruit-like sweetness.
📍 Farm: Patio Bonito
🧼 Process: Washed
🌱 Altitude: 1700 masl.
🌾 Varietal: Bourbon Aji

Head over to our website to find out more about Carlos and Paola and the coffee they produce.

You can grab a bag online or from our retail shelves. Only a small batch so you may want to hurry up! Once it’s gone, it’s gone! 🤩

🇳🇮NICARAGUA - New Coffee Drop 🇳🇮☕ Tasting Notes: A well balanced cup. Sweet and chocolatey at the base, brightened acidi...
01/07/2026

🇳🇮NICARAGUA - New Coffee Drop 🇳🇮

☕ Tasting Notes: A well balanced cup. Sweet and chocolatey at the base, brightened acidity.
🧼 Process: Washed
🌱 Altitude: ~1200 masl.

“Coffee was introduced to Nicaragua in the late-1700s by missionaries and colonists. By the late 19th century, coffee became the country’s main export. Although a long history of political unrest, civil war and recent natural disasters have challenged the country, Nicaragua continues to produce coffee as its main crop for trade.

In Nicaragua, coffee grading is based primarily on elevation and occasionally on screen size and cup quality. The country uses terms that indicate the altitude at which the coffee was grown - higher elevations typically produce denser beans with more complex flavor profiles because there the cherry ripens more slowly in cooler temperatures.

SHG, or Strictly High Grown, indicates an altitude of aver 1,200 meters above sea level.

HG, or High Grown, indicates elevations between 900 and 1,200 masl.

EP (European Preparation) specifies that the green beans are all hand sorted to remove any defective beans and foreign material.” [1]

Grab a bag from our retail shelves or online! 🤩



[1] Inetramerican Coffee

BURUNDI WOMEN! 🇧🇮✨Turihamwe is a women-led initiative, built and owned by a group of seven entrepreneurial coffee farmer...
29/06/2026

BURUNDI WOMEN! 🇧🇮

✨

Turihamwe is a women-led initiative, built and owned by a group of seven entrepreneurial coffee farmers who pooled their savings, now involving more than 2000 smallholders in the area earned through quality premiums from JNP Coffee, to create Burundi’s first woman-owned wet mill.

When they began, there wasn’t even a road to the site. Undeterred, they built one themselves.

With support from JNP Coffee and their own investment group, these women turned a dream into a thriving business.

Since its founding in 2019, Turihamwe has grown from producing five micro-lots to 1,200 bags of coffee per year, all while maintaining a focus on quality and sustainability.

Find out more on our website! ☺️

Grab a bag from our retail shelves or online! 🤩

THE CUP
☕ Tasting Notes: Sweet with citrusy flavours.
☕ Roast level: medium
📍 Origin: Burundi, Ngozi Province
🧼 Process: Fully washed & sun dried
🌱 Altitude: 1,750 m.a.s.l.
🌾 Varietal: Bourbon

🇨🇷Now this is an EXCITING one! COSTA RICA Red Honey processed Microlot from a family farm!🇨🇷☕ Tasting Notes: Cocoa with ...
29/05/2026

🇨🇷Now this is an EXCITING one! COSTA RICA Red Honey processed Microlot from a family farm!🇨🇷

☕ Tasting Notes: Cocoa with mellow fresh hibiscus and caramel flavors. Tart acidity and mild clean fruit-like sweetness.
📍 Origin: Costa Rica, Las Lajas Micromill
🧼 Process: Red Honey
🌱 Altitude: 1400-1600 masl.
🌾 Varietal: SL-28

- - - - - - - -

Microlots from Costa Rica are typically sourced from producers who have invested not only in growing their farms, but also in building and operating their own processing facilities, typically called “micromills.” Micromills typically yield fewer than 1,000 bags annually, and are often independently owned by a family or small group of producers.

Oscar and Francisca Chacón are third-generation coffee producers, but the coffee is more than just in their family heritage - it’s in their hearts and souls as well. The couple is committed to quality and innovation, and are among the very first farmers in Costa Rica to produce Honey and Natural process specialty coffee.

The Red Honey process is a specific process initially developed by Las Lajas.

Freshly harvested and sorted cherries are delivered to the mill and promptly depulped, leaving 100% of the mucilage (parchment) on the bean. After this, the coffee is transferred to a covered patio where it is turned several times a day until the drying process is complete. The color of the parchment is a direct result of the depth of coffee when dring.

⬇️👇
Grab a bag online or from our retail shelves! And if you’d like to have a taste before you buy... These super fun beans will be available for V60 in both our Cardiff shops for the next 2 weeks!

☕️THE CUP☕️

☕ Tasting Notes: Cocoa with mellow fresh hibiscus and caramel flavors. Tart acidity and mild clean fruit-like sweetness.
📍 Origin: Costa Rica, Las Lajas Micromill
🧼 Process: Red Honey
🌱 Altitude: 1400-1600 masl.
🌾 Varietal: SL-28

25/05/2026

Small batches, big flavours. Hand roasted in Cardiff Bay.

Grab a bag from our retail shelves in the Bay and city centre or online. Over 30 exciting origins available! 🤩

Which is your favourite? 👀

New coffee drop! Papua New Guinea - Goroka Valley. 🇵🇬THE CUP☕ Tasting Notes: Clean with good body and medium acidity. Hi...
15/04/2026

New coffee drop! Papua New Guinea - Goroka Valley. 🇵🇬

THE CUP
☕ Tasting Notes: Clean with good body and medium acidity. Hints of herbal & floral and caramel.
📍 Origin: Papua New Guinea, Goroka Valley
🧼 Process: Washed
🌱 Altitude: 1500-1800 masl.
🌾 Varietal: Typica

From our supplier ⬇️

“Our coffee is sourced from the Eastern Highlands of Papua New Guinea, nestled deep within the valleys of the Goroka region. This area is characterised by small farm holders in remote villages, who produce 95% of the coffee. On average, each farmer cultivates approximately 0.7 hectares of land, contributing to a total production area of 1,435 hectares.

Due to the challenges of road access to nearby towns, farmers typically wash their coffee locally and then sell their parchment to village traders. From there, the coffee is transported to the dry mill for hulling, cleaning, grading, and packaging. Finally, it is shipped out from the capital of the Eastern Province, Lae, which serves as Papua New Guinea’s key port city.”

THE CUP
☕ Tasting Notes: Clean with good body and medium acidity. Hints of herbal & floral and caramel.
📍 Origin: Papua New Guinea, Goroka Valley
🧼 Process: Washed
🌱 Altitude: 1500-1800 masl.
🌾 Varietal: Typica

Grab a bag from our retail shelves or online! 🤩

Address

58 Bute Street, Quayside
Cardiff
CF105BN

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm
Saturday 9am - 5pm
Sunday 10am - 5pm

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