Often eat rock sugar stewed pears, which can eliminate phlegm and heat, nourish yin and moisten the lungs. It is better to stew with Fritillaria if possible. Stewed pear with rock sugar is very helpful for coughing, and people with bad voice can drink more. Rock sugar Sydney can be made into Sydney drink, which can clear away heat and quench thirst. It is suitable for fever, body fluid damage and thirst caused by exogenous warm virus.