A method and composition for reducing the cholesterolemic effect in mammals of ingesting a blended nutritional fat composition containing a palm mid-fraction (PMF) hardstock fat combined with an unsaturated vegetable oil. The composition is solid or semi-solid at 20° C. and fluid at 35° C., and includes between 15% and 45% by weight linoleic acid. The weight ratio of disaturated triglyceride (DST) molecules to trisaturated triglyceride (TST) molecules is greater than 10:1, and the PMF hardstock fat contains approximately 50% to 95% by weight DST molecules, the majority of which contain either palmitic acid or a combination of palmitic and stearic acids at the sn-1 and sn-3 triglyceride positions and either oleic acid or linoleic acid at the sn-2 molecular position.