2. During storage, if potatoes are exposed to light for a long time, the surface layer will produce chlorophyll, which will germinate, and then the chlorophyll part will produce a lot of solanine. Green potatoes obviously have more chlorophyll and more solanine.

3. If you find the potatoes turn green when you buy them, please don't buy them. If the fresh potatoes bought home are too late to turn green, at this time, the solanine content of potatoes is not high. Just peel, cook at high temperature and add some vinegar, and most of the solanine will be decomposed.