Every morning at 7:14 AM — I know because I've timed it for years — Quang asks the same question. Are we ready? It's a polite way of saying: have we calibrated.
We don't pour the first cup of the day until the bar is calibrated. That means pulling three espresso shots, tasting them in order, adjusting the grinder by a tenth of a notch in either direction, and pulling three more. The shop opens at seven; we usually start serving at 7:18.
Why we do it this way
Coffee is a food that changes overnight. Humidity, temperature, the freshness of the beans roasted on Tuesday — none of it stays put. By Friday morning, the same recipe needs a slightly finer grind to hit the same flavor. Most of the time it's a 0.1 adjustment. Once a month it's a 0.4. The recipe never changes; the world does.
The cup tastes like the time you gave it.
Slow brewing — pour-over, in particular — is the same idea, just slower and more visible. You watch the water meet the grounds. You hear the bloom. You see the first dark drops fall. If you got the grind wrong, the water knows before you do.
How long is too long
For our Yirgacheffe, three minutes thirty seconds, give or take fifteen. Faster and the cup tastes like grass. Slower and it tastes like wet cardboard. Right in the middle, it tastes like a peach you didn't know you wanted.
We don't write any of this on the menu. We just pour it that way every day, hoping you can taste it.