Barley coffee is a caffeine-free beverage made from roasted barley grains. It is often used as a coffee substitute, providing a similar flavor profile without the stimulating effects of caffeine. The grains are roasted until they reach a dark color, then ground and brewed like traditional coffee. This drink is popular in various cultures, particularly in Italy, where it is known as "caffè d'orzo." Barley coffee is rich in antioxidants and can be enjoyed hot or cold. It is also a suitable option for those looking to reduce their caffeine intake while still enjoying a warm, comforting drink.