Matcha tea is classified into different grades based on its quality, flavor, and intended use. The main grades are ceremonial grade (highest quality, used in traditional tea ceremonies), premium grade (high quality for daily consumption), and culinary grade (suitable for cooking and baking). Ceremonial grade matcha is made from the finest, youngest tea leaves and has a vibrant color, rich flavor, and no bitterness. Lower grades may have a more astringent taste and are often more affordable.