This type of espresso machine utilizes one brewing head and portafilter, offering a compact and often more affordable option for espresso preparation. It typically features a single boiler system, heating water for both brewing and steam production. A classic example is a lever-operated machine where the user manually controls the pressure profile throughout the extraction.
The streamlined design benefits smaller cafes, home baristas, and businesses with limited counter space. Its simplicity can make it easier to learn and master, providing a direct path to developing espresso-making skills. Historically, these machines played a significant role in the evolution of espresso culture, representing the foundation upon which more complex brewing systems were built.