Quantum Coffee RoastersCardiff Bay, Cardiff

"Cardiff Bay's own roastery, pouring single-origin filter from beans you can buy to take home. Come when you want coffee traced to a specific farm rather than blended for convenience."

What we love

• •In-house roastery: they source, roast, and serve under one roof
• •Single-origin filter coffee, including a Yunnan, China offering
• •Retail beans sold in-shop, 900g bags at specialty pricing
• •Cold brew on the menu alongside drip filter