Stefan Bracht’s coffee obsession took root as his expanding collection of coffee-making paraphernalia grew. His assembly of antiquated hand roasters, brewing equipment and grinders soon became a focal point for the growing community of coffee lovers in Berlin. Frequently, they would meet in the basement of his architectural practice to talk, brew and taste coffee. His first coffee shop, Kiez Coffee Bar, was already one of the early pioneers in the city’s burgeoning specialty coffee scene. But Stefan still needed a home for his historic array of coffee equipment that he had amassed over time. In a joint-venture with Karlheinz Rieser, of Coffee Star, the duo decided to combine both of…