The raw materials of hot tea commonly used in restaurants are as follows:

1. Green tea: Green tea is a kind of non-fermented tea, which has fragrance and bitterness, and can help digestion and improve metabolism. Green tea also contains many antioxidants, which are beneficial to prevent cancer, heart disease and stroke.

2. Jasmine tea: Jasmine tea is an aromatic tea made by mixing jasmine and green tea, which has a strong floral flavor and fresh taste. Jasmine tea also helps to soothe nerves and relax the body, which is beneficial to the quality of sleep.

3. Chrysanthemum tea: Chrysanthemum tea is a tea drink brewed with chrysanthemum, which has the functions of clearing away heat and toxic materials, moistening lung and relieving cough. Chrysanthemum tea can also relieve headaches and oral ulcers, which is beneficial to improve immunity.