Silverback Coffee of Rwanda

Five bags, one country, no exceptions: Silverback sells Rwandan coffee and nothing else, grown in the hills the family that runs it comes from. Most single-origin programs are a market position; this one is a return address.

It is all Rwandan Bourbon Arabica grown between 4,000 and 6,500 feet around Musanze, with bag copy that stops at origin level and carries no farm names or roast dates.

Pour-over shows up only in the shop's own line about a three-minute brew. There is no published drink menu, and no competition or barista history behind the bar.

The Hope Street room is a double-height glass box at the foot of a Bunker Hill tower, curtain wall on two sides, with a ring chandelier hung in the volume and reclaimed-wood tables on dark floors underneath it. A Rwandan coffee sack on the wall is the one piece of decoration making an argument; the rest is the building's own vocabulary, borrowed.

• Tower lobby
• Double height
• Curtain wall