What is the use of coffee cup demitasse and saucer

A coffee cup demitasse and saucer are typically used for serving espresso or other small, strong coffee drinks. The demitasse cup is smaller in size compared to a regular coffee cup, allowing for a smaller serving size of coffee. The saucer serves as a place to rest the cup when not in use, and can also be used to hold a small treat or biscuit to accompany the coffee. These sets are often used in cafes, restaurants, and at home for a more elegant and refined coffee drinking experience.