Stone Coffee: What’s That Rock at the Bottom?

Published: Oct 20, 2026 Author: World Gafei Last Updated: Oct/20/2026 140 views

This Taiwanese café serves coffee brewed with maifanite stones, which reduce bitterness and create a smoother, balanced cup—without altering the roast.

You’ve had black coffee before—no milk, no sugar, just pure extraction. But have you ever taken a sip, enjoyed the cup, and then reached the bottom to find an actual rock? Not grounds, not a stray bean, but a literal stone resting at the base of your cup. Is that normal? Did the barista forget something? Or is this some kind of specialty coffee experiment you’ve never heard of?

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou's FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。