While the present invention provides a kind of what and reduces content of trans fatty acids, play that white property is excellent, melts in mouth and feels good chocolate with the compatibility of cocoa butter and resistance to surface. A kind of transesterification grease, what constitute in fatty acid composition unsaturated fatty acid content being set as 10 mass % hereinafter, and other fatty acid composition is adjusted to defined content.本發明提供一種於減少反式脂肪酸含量的同時，與可可脂的相容性及耐表面起白性優異、口中融化感良好的巧克力。一種酯交換油脂，其於構成脂肪酸組成中將不飽和脂肪酸含量設為10質量%以下，並將其他脂肪酸組成調整為規定的含量。
