Flaxseed oil cannot be used for cooking at high temperatures. According to relevant public information, flaxseed oil contains richer nutrients than ordinary edible oil, which is of great benefit to the body after consumption. However, high temperatures will destroy this substance, so flaxseed oil cannot be cooked at high temperatures. The temperature when using linseed oil should be below 120 degrees. The nutritional component of flaxseed oil is alpha-linolenic acid, which is a very active polyunsaturated fatty acid that will be destroyed once it is heated above 45 degrees.