Pear-syrup candy, also known as lígāotáng (梨膏糖) or líqīnggāo (梨清膏), is a traditional medicine and confection from eastern area of the jiangnan region of china. it has a crystal clear colour and can be used to help relieve coughing, reduce sputum, and stimulate appetite. its main components are pear juice, honey and various kinds of herbs. with the development of modern medical science, it is now rarely used to treat coughing; pear-syrup candy has become a souvenir and a snack, and is a part of jiangnan culture.

Source: Wikipedia