Infusers are devices or tools used to extract flavors from herbs, fruits, or other ingredients into liquids, typically water or oil. They are commonly used in making beverages like tea or flavored water, allowing the infusion of natural tastes without solid particles. There are various types of infusers, including tea infusers, herb infusers, and oil infusers. Some are simple mesh balls or bags, while others are more complex, like electric infusers that heat and stir the mixture. Infusers enhance the flavor of drinks and culinary dishes, making them popular in kitchens and cafes.