1, according to the color to judge whether to continue to use.
If fried food is found, the remaining edible oil has become very dark in color, and its viscosity is relatively high, and there are many impurities in it. At this time, for the sake of health, it is recommended not to use it again.
If after frying things, it is found that the remaining oil is not deep in color and viscosity, or there is no food residue in it, then it can be used again. But it needs to be left for a period of time to precipitate, and the clear oil on it can be filtered for later use.
It is best to seal the remaining oil when storing it, because both light and oxygen will accelerate the rancidity of oil and produce peculiar smell and harmful substances.
2. It is recommended to use it within three days.
Because the oil of fried food is already cooked oil, the longer it is left, the easier it will deteriorate, and it will also produce a lot of harmful substances, which is harmful to human health.
Therefore, after the food is fried, if the remaining oil can still be used, it should be used up as soon as possible, preferably within 3 days, to avoid leaving it for too long.