1、 Color difference

The simplest difference between the two is color. Purple onion skin is purple, which is also common. The white onion skin is very white. It is round and spherical in shape, and some are oblate and spherical

2、 Moisture difference

Purple onion meat is very thin, showing a reddish color. It doesn't have much water, but it's very crisp and smells stronger. The white onion is very thick and contains more water than the purple one

3、 Taste difference

Purple onions are not very sweet, but they taste spicy; The taste of white onions is less spicy than dessert. And the preservation methods are different. White is not very good to preserve

4、 Yield difference

If the two are compared, the yield is very different. The yield of purple is very high, while that of white is very low