Pears are sweet and cold in nature. Pears moisten the lungs and large intestines and eliminate hot phlegem and sputum which is green or yellow in colour. Cold phlegm, which is clear or white, or nightime coughing, will only be helped with stewed or steamed pears. Chinese Pears or Duck pears which are yellow are therefore suitable in cases of acute and chronic bronchitis, coughing with or without sputum. Pear tea can also help with clearing hot phlegm from a cough. Pears can be good for constipation if eaten with the skin on and when not overripe. Even the worst constiptation can be helped by eating pears before food on an empty stomach.