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

Quantum Coffee Roasters

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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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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! 🤩

31/03/2026

ARTIST COFFEEEEE BLEND - Joey Crow .art

TASTING NOTES
Caramel, cocoa, dark chocolate and nutty flavours with orange and strawberry notes

Origin: various (blend)
Varietal: various (blend)
Roast Level: Medium

Available online and on retail shelves!

28/03/2026

ARTIST EDITION - round 2 .art 🤩🥰

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

We know first hand that visibility is EVERYTHING for upcoming artists so we decided to team up with some of our favourite local art-makers to celebrate and highlight their incredible work.

Our SECOND artist collaboration is with the wonderful Joey Crow - comic creator and illustrator. .art

In addition to the amazing take away cups, you can also grab a bag of the artist signature blend coffee beans!

Oh, and we’ve left some freebies for you in both our shops as well!

LIMITED RUN! ONCE THEY’RE GONE, THEY’RE GONE!

Ouiiiiiiiiii! 🥳🤩

19/03/2026

Around 90% of Indonesia’s coffee is grown by smallholders, often on farms averaging just one hectare. Across the country, millions of families depend on coffee as their livelihood. It’s personal, multigenerational and deeply tied to identity.

Our lot comes from the Toraja region in the highlands of Sulawesi - one of the island’s most revered coffee-growing areas.

“Toraja” translates to “people of the upland,” referring to the Indigenous communities who live in the region. The Toraja people have maintained their cultural identity for centuries, expressed through their language and rituals, as well as the iconic tongkonan houses - boat-shaped houses decorated with intricate wood carvings.

Find out more about this amazing coffee and the people behind it in our Geek Zone! (Link in bio.)

- - - - - - - - - -
THE CUP
☕ Tasting Notes: Juicy and citric with notes of rosehip and grapefruit. Intense yet creamy body with a hint of spiciness.
📍 Origin: Kalossi, Toraja
🧼 Process: Wet-hulled
🌱 Altitude: 1100-1800 masl.
🌾 Varietal: Typica, S795, Kartika
🏅Grading: Gr. 1

Grab a bag online or pop into one of our Cardiff shops to pick one up off the shelves.

13/03/2026

NEW COFFEE DROP! Sulawesi (Indonesia) - Toraja, Kalossi 🇮🇩

☕️Tasting Notes: Juicy and citric with notes of rosehip and grapefruit. Intense yet creamy body with a hint of spiciness.

📍 Origin: Toraja, Kalossi
🧼 Process: Wet-hulled
🌱 Altitude: 1100-1800 masl.
🌾 Varietal: Typica, S795, Kartika
🏅Grading: Gr. 1

Around 90% of Indonesia’s coffee is grown by smallholders, often on farms averaging just one hectare. Across the country, millions of families depend on coffee cultivation. It’s personal. It’s generational. And in Sulawesi, it’s deeply tied to identity.

Coffee here is grown in small home gardens, often tended by families who have cultivated these lands for generations. Production is largely manual — from picking to processing.

Sulawesi coffee has long been considered one of Indonesia’s finest exports — juicy, with notes of rosehip and grapefruit, with a creamy body and a hint of spiciness.

Grab a bag online or from our retail shelves. And head into our GEEK AREA to find out more about this amazing coffee!

09/03/2026

We had such an amazing time at the Wales Strongest Woman competition yesterday! What a way to celebrate International Women’s Day! 💪🏴󠁧󠁢󠁷󠁬󠁳󠁿

We created a special blend exclusively for the event and we were blown away by the demand for it! We sold all the beans we brought with us and some lovely people left empty handed. ☕️🤩

We can’t have that! So we promised to make the blend available online for a limited time...

Grab a bag from our website! Only available for the next two weeks!

06/03/2026

So excited for Sunday and our collab with at ! Let’s celebrate International Women’s Day in style and STRONG!

See you there! We’ll be serving our special Strongest Woman batch brew from 9am! (And we’re bringing some more fun beans as well!)

See you on Sunday! ☺️

03/02/2026

You asked, we listened! NEW SUBSCRIPTIONS ARE HERE!🥳

We’ve been working hard behind the scenes and we’ve completely rebuilt our subscription service on a new platform that is smoother, simpler, and gives you much more control.🤩🤗

You can choose from our staple coffee blends, pods, hot chocolates and loose leaf teas. Or opt for our Roaster’s Choice for a Regular Single Origin Surprise!

With the new platform, you’ll be able to edit, pause, skip, swap, or add items to your subscription anytime — full flexibility, no fuss.✨

So, what’s available?
✨Roaster’s Choice (most popular)
✨Tiger Bay Signature Blend
✨Decaf Blend
✨Gwalia - Blend for Wales
✨Brazil Santos
✨Coffee Pods
✨Loose Leaf Teas
✨Hot Chocolates

We’re so excited to finally be able to share these with you! Yeeey! 🤩

Head over to our website for more info. Link in bio. ⬆️

26/01/2026

Never worry about running out of unique freshly roasted beans again!

With over 30 single origins available on our website, the decision paralysis is REAL! The easiest way to avoid it is to leave it up to our roaster to choose for you and you’ll be guaranteed great tasting coffee with an element of surprise every month (/week).

Head over to our website for more info. Link in the bio.

19/04/2025

NEW COFFEE DROP! Kenya - Ruchu Farmers Cooperative Society 🇰🇪

☕️A clean and sweet cup with bakers chocolate and black tea notes and a balanced acidity.

Our Ruchu coffee comes from Kandara in Muranga County. Situated at 1,700 meters above sea level, allows for favourable, slow growth. The coffee also benefits from the distinct red, nutrient rich volcanic soil present in these parts of Kenya.

Ruchu coffee is brought to Europe in special 30kg grainpro bags that are from a local brand (Ngirigiri) in Mombasa that has a small workshop based in the heart of a small village, creating local employment for many people in the disabled community.

They believe in empowering their team through work in sustainable fashion. Their workshop manager is a paraplegic who inspires his team through his dedication and his attention to detail.

Ngirigiri has also been supporting the area’s local children to progress through school by encouraging and supporting their education. They believe that the starting blocks of life begin with education and every child should be given the chance to excel to their full potential.

Grab a bag of these fab beans online or from our retail shelves. 🤗

02/04/2025

🇻🇳Fan favourite VIETNAM IS BACK IN THE HOUSE!🥳

☕️Well balanced with mild sweet acidity that comes through to a rich chocolatey & nutty flavour & a rich full body.

Absolutely fantastic in a French Press and in a moka pot. Or as the boss says: “it’s an all rounder, all day-er”. We trust the boss! ❤️😎

More about the coffee:

Vietnam has only recently entered the Arabica speciality coffee market and with 95% of Vietnam’s coffee output being Robusta coffee, this Arabica coffee is a rare find.

Grown at an altitude between 1000 – 1600 masl, Lam D**g is renowned for its Arabica coffee production. Stunning views and carved hillsides reveal over 23,000 hectares totally devoted to Arabica plantations.

The capital of the province, Da Lat City, carries memoirs of Indochina and still preserves the colonial charm of an Asiatic-French fusion and is a popular tourist destination. It is located in the Central Highlands region of Vietnam and its economy is based largely on agriculture and apart from coffee, tea and vegetables are the mail agricultural products.

Harvesting of the coffee is done by hand and is labour-intensive. Selective picking is the method used, instead of the strip picking method used for Robusta, where all the cherries, ripe and unripe, are removed from the tree at once.

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

Website

http://www.quantumroasters.co.uk/

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