1. Break ginger and onion with a knife, which will help their juice to ooze out, and then soak them in 1: 1 clear water. After soaking for 30 minutes, the juice is filtered out, and the onion Jiang Shui is finished.

2. Mash the onion and ginger, then put them in a pot, add 1:2 water to boil, and add a proper amount of brown sugar. The onion Jiang Shui made by this method is suitable for people suffering from colds and colds. Patients can take it while it is hot, which has the effect of expelling cold.