The heart of every Caffe Nero coffee drink & one of the hardest to get right. A single espresso consists of 7 grams of coffee, tamped just right. The espresso should pour out of the handle like 'honey off a spoon' -not too fast & not too slow. When our baristas train in making espresso they time their pour. The perfect espresso will have a good golden brown 'crema' which reforms when stirred.