To provide an efficient concentration and/or purification method by which a lipid-soluble minor ingredient contained in plant tissues is recovered from an extract composition obtained by extraction with a fat and/or organic solvent. [MEANS FOR SOLVING PROBLEMS] The method comprises extracting with a fat and/or organic solvent a lipid-soluble minor ingredient which is a solid and/or a viscous liquid at ordinary temperature and ordinary pressure (25 DEG C, 1 atm) and is contained in plant tissues, adding a fatty acid ester to the extract composition obtained, and then subjecting the mixture to molecular distillation to thereby recover the target lipid-soluble minor ingredient together with the fatty acid ester added, while maintaining the flowable state of the target ingredient. Thus, the target ingredient can be efficiently concentrated and/or purified while preventing adhesion to the wall for molecular distillation/concentration and removing poorly volatile impurities.