PROBLEM TO BE SOLVED: To provide a method of manufacturing oil and fat that are inexpensive, have little trans acid content, and become raw materials for roll-in margarine, and to provide roll-in margarine made from the oil and fat and having good moldability and good roll-in physical properties during manufacture.SOLUTION: An oil and fat composition containing SSS by 2-13 wt.% and SSU and SUS by 34-54 wt.% in total in the entire oil and fat composition, with the weight ratio of the total contents of SSU and SUS to the SSS content being 4 to 20 and the weight ratio of the SSU content to the SUS content being 1 or more, is manufactured according to a specific manufacturing method, etc. The roll-in margarine containing the fat and oil composition by 30 wt.% or more is manufactured.COPYRIGHT: (C)2012,JPO&INPIT【課題】 安価で、トランス酸含量が少なく、ロールインマーガリンの原料となる油脂の製造方法及び該油脂を用いてなる製造時の成型性やロールイン物性が良好なロールインマーガリンを提供すること。【解決手段】 油脂組成物全体中、SSSを2~13重量%含有し、SSUとSUSを合計で34~54重量%含有し、(SSUとSUSの合計含量)/SSS含量の重量比率が4~20且つSSU含量/SUS含量の重量比率が1以上である油脂組成物を特定の製法等に従って作製し、それを30重量%以上含有させてロールインマーガリンを作製すること。【選択図】なし