The present invention provides means of thickening a liquid component.Specifically, present invention provides: a thickener for a liquid component, whereinthe thickener contains an oil and/or fat composition,the oil and/or fat composition contains an oil and/or fat component containing one or more types of XXX-type triglycerides having fatty acid residues X, each with x carbon atoms, at positions 1 to 3 of glycerin,x, the number of carbon atoms, is an integer selected from 10 to 22, andthe XXX-type triglyceride is contained at 50% by mass or more relative to a content of the oil and/or fat component being 100% by mass； orthe thickener according to claim 1, whereinthe oil and/or fat composition is an oil and/or fat composition in a powder form,the oil and/or fat component contains a β-type oil and/or fat,a particle of the powder oil and/or fat composition has a plate shape, anda loose bulk density of the powder oil and/or fat composition is 0.05 to 0.6 g/cm3.
