Reviews of Quantum Coffee Roasters

One of the best flat white and ice latte I’ve ever had! The coffee bean they’re using is more on a nutty note, perfectly roasted. The cakes were a surprise too! We ordered one lemon, chia and pistachio muffin, and a pistachio cake. Both were fragrant and there was even lemon filling inside of the muffin! The overall vibe is cosy with plenty of sunlight flashing in the place :)

Been using Quantum for some time, mainly ordering coffee beans online and also been into the shop in Cardiff Bay. Really like their coffee, it is priced reasonably and they are reliable. Can’t ask for any more than that really! Their shop in Cardiff Bay has a nice aesthetic and good selection of food items.

Nice cafe just round the corner from Cardiff Bay. Friendly staff and very relaxing atmosphere. They carry a variety of beans although they are for sale and you can’t choose what your coffee is made of. On my visit the only choice for a drip (filter) coffee is from Yunnan China. Coffee was nicely brewed but a little too weak for my taste. I still enjoyed it though. It’s always nice to have freshly ground and brewed coffee.

Had a trip down to Cardiff bay for a short break and was anxious I wouldn’t be able to get my usual morning coffee fix. After a quick google, we found Quantum Coffee Roasters and decided to give it a go. Service was excellent- friendly, helpful, didn’t feel rushed or pressured. Ordering was painless, easy, and enjoyable. The atmosphere was calm and cosy. I had second thoughts about getting a take out! And, mostly importantly, the coffee was great. Really excellent. Not bitter, not sour, bang in the sweet spot. The oat milk was also steamed to the right temperature. Which quite a few coffee shops seem to get wrong and burn the milk (and my tongue!). We managed to visit twice during our stay, and both times were exactly the same. Even with different baristas on both days. Always friendly and made perfect coffee. It’s a shame that Quantum Coffee Roasters isn’t near my home!! Will definitely be visiting again the next time I’m in Cardiff bay. Couldn’t recommend highly enough.