When we riff on an idea, we start with a question: What if? What if we brewed coffee cold, for a sweeter, smoother flavor? What if we poured it on tap? Into a glass, not a mug? What if we met for coffee in the evening? With friends, and maybe—gasp—without wifi? What if it weren’t sacrilegious to drink our coffee decaffeinated, spiced, fruited, or even barrel fermented with wild yeast? Now we’re talking. Let’s Riff.