Espresso, cappuccino, and latte drinks originated from innovations in espresso coffee making in the early 20th century. Espresso is a strong, concentrated coffee made by forcing hot water through finely ground coffee beans using steam pressure. It can be served alone or as a base for other drinks. A latte consists of one third espresso and two thirds steamed milk with foam on top, while a cappuccino contains more milk foam. Proper preparation and pouring techniques aim to create decorative latte art designs on the drink's surface.