Fats and oils with a high 2-position palmitic acid content, which is a raw material for oil and fat compositions containing palmitic acid at the 2nd position and XPX triglyceride with X bonded at the 1st and 3rd positions, will crystallize when the reaction temperature is lowered, causing problems such as reactor clogging. There is a possibility of inviting. (X: unsaturated fatty acid or saturated fatty acid having 10 or less carbon atoms) However, by mixing with a specific raw material fatty acid or a lower alcohol ester thereof, the cloud point of the raw material mixture can be made 39.5 ° C. or lower, and the reaction temperature is Even if it is low, crystal precipitation does not occur.２位にパルミチン酸、１，３位にＸが結合したＸＰＸトリグリセリドを含む油脂組成物の原料となる２位パルミチン酸含量の高い油脂は、反応温度を低くすると結晶化し反応器閉塞などのトラブルを招く可能性がある。（Ｘ：不飽和脂肪酸又は炭素数１０以下の飽和脂肪酸）しかしながら特定の原料脂肪酸又はその低級アルコールエステルと混合することで原料混合物の曇り点を３９．５℃以下とすることができ、反応温度がたとえ低くても結晶析出が起こらない。
