Hello!

You can use white sugar, but the effect of cough and phlegm will be reduced, and the taste will be worse, so it is best to use rock sugar.

Icing sugar is cool, and rock sugar has the effect of moistening the lungs, clearing lung heat, use it and pear together to boil cough pear water, cough and phlegm effect will be better.

Icing sugar nourishes the yin, moistens the lungs and stops coughing, and has a good auxiliary therapeutic effect on lung dryness and cough, dry cough without phlegm, sputum with blood.

So boiled rock candy pear put rock candy is the most appropriate, rock candy has a moisturizing lungs, cough, clear phlegm, remove the role of fire, and rock candy with its heat and fire effect is more significant.