In the history of coffee, many important innovations have been able to improve this sector, solve problems or simply alleviate them. Among all these inventions, some have even managed to revolutionise the beloved black drink. These latter are very few and can probably even be counted on the fingers of one hand, and you don't have to be audacious to say that the introduction of the lever was one of them. It has allowed us to know the espresso as we know it today and has given rise to an immensity of new possibilities.
