Yuja, also known as yuzu, is a citrus fruit originating from East Asia, particularly popular in Japan, Korea, and China. It has a unique flavor that combines the tartness of a lemon with the fragrance of a grapefruit. The fruit is typically yellow or green and is used in various culinary applications, including sauces, dressings, and desserts. The zest and juice of yuja are prized for their aromatic qualities and are often used in beverages, such as yuja tea, which is made by mixing the fruit with honey and hot water. Additionally, yuja is rich in vitamin C and antioxidants, making it a healthy addition to many dishes.