The present invention provides means of thickening a liquid component and specifically is a thickener for a liquid component, wherein the thickener contains an oil and/or fat composition, and when a total triglyceride content is set to 100% by mass, the oil and/or fat composition contains 65 to 99% by mass of one or more types of XXX-type triglycerides having fatty acid residues X, each with x carbon atoms, at positions 1 to 3 and 35 to 1% by mass of one or more types of X2Y-type triglycerides each having a fatty acid residue Y with y carbon atoms in place of one of the fatty acid residues X of the XXX-type triglyceride, x, the number of carbon atoms, is an integer selected from 8 to 20, and y, the number of carbon atoms, is each independently an integer selected from x + 2 to x + 12 and satisfies y ‰¤ 22.
