One day in 1975, after driving around a bit, Eric and Anna Maria found thePiazza di Sant'Eustachio.In the distance, they immediately saw the café they were looking for. Outside the door, a crowd of people were waiting in line to enjoy one of the espressos Mr. Eugenio was preparing. The couple joined in. "It was one of the best coffees we tasted during the trip," Eric recalled 35 years later, at a conference organized by the World Intellectual Property Organization. Taking a sip from that cup changed his life. "The master coffee maker taught me that to make a good espresso, you need to introduce a specific amount of air into the water before it comes into contact with the coffee," he explained to the audience. When he returned to Switzerland, he worked hard to find a convenient and simple system so everyone could make an espresso. quality at home. Today, he's considered one of the fathers of coffee capsules. How did he do it?