This invention provides a fat and/or oil composition for hot cooking and a method of preparing the same. The fat and/or oil composition for hot cooking contains fat and/or oil and alkaline metal soap containing saturated fatty acid with carbon number of 4~16, wherein the content of alkaline metal in the fat and/or oil composition for hot cooking is 0.1-5.0 mass ppm. This invention further provides a method of preventing deterioration of fat and/or oil for hot cooking caused by heating, which includes a step of adding alkaline metal soap containing saturated fatty acid with carbon number of 4~16 to the fat and/or oil for hot cooking, such that the content of alkaline metal in the fat and/or oil composition for hot cooking is 0.1-5.0 mass ppm.本發明提供一種加熱烹調用油脂組成物及其製備方法，該加熱烹調用油脂組成物含有油脂和碳數為4～16的飽和脂肪酸的鹼金屬皂，加熱烹調用油脂組成物中的鹼金屬的含量為0.1～5.0質量ppm；本發明還提供一種抑制加熱烹調用油脂因加熱引起的劣化的方法，該方法包括在加熱烹調用油脂中添加碳數為4～16的飽和脂肪酸的鹼金屬皂，使得加熱烹調用油脂組成物中的鹼金屬的含量為0.1～5.0質量ppm的步驟。
