What are the free drinks provided by the hotel for guests in summer? For example: sour plum soup

Sour plum soup, mung bean soup, soybean milk, corn juice, or cooked millet porridge, mung bean porridge, rice lotus leaf porridge, etc. Anyway, you don't need a lot of rice when you drink soup, just tick off the debt ~ I wonder if I can buy rose eggplant there? A kind of red dried flower, which can be drunk directly by soaking in water. You can also add some things like hawthorn, dark plum and dried chrysanthemum, and add some rock sugar, which is sour and sweet.