Kay Cheon’s coffee began with a question that did not go away. He cycled before school. Coffee was just there. Then friends handed him cups that were not merely better. Different. He needed to know why. A V60. A shop in Los Angeles in 2013. The stage in 2018 to learn, not to win. In 2025 he became United States Barista Champion. He says the community is what kept him. Curiosity and flavor would not have been enough. In Santa Barbara he is building Parterre. A garden. Nature, arranged.

On Monday, September 15, 2026, we hold that question to one pressure: whether the cup still answers when the brew is slow on purpose, and when the beans fall through a hole in the bar.

Not a Barista went to Chongqing for ICCF First as friends. The room was packed. Four people stood around one brew, passed it, laughed. Coffee felt close again. Sprudge walked Slow by Slow in Boise. Ten years. Fast by Slow opened next door on July 17. Same coffee, faster. Under the bar a Weber EG-1 eats beans through a hand-carved vortex. You watch them disappear. Accademia del Caffè Espresso in Florence is dropping Coffee Facts. Sixteen topics. Four chapters. Seed to cup. Jonathan Gagné read 300 particle size distributions on 24 espresso grinders. Dialing in is dialing in the fines. He got the Pulsar. A valve. No bypass. A centimeter of slurry. Coffee Review cupped nearly 200 darker roasts. The top ten sat Agtron 44 to 47, the cusp of second crack. Mark Prince put cà phê sữa đá back. A phin. Four to five minutes. Condensed milk is structural. The slow drip is the point.

A question that stayed. A packed room in Chongqing. Beans falling through a hole. The fourth wave is not the chapter count. It is whether someone still stays long enough for the cup to answer.