PURPOSE: To simply and profitably obtain a finely particulate gel useful in a food field by mixing and stirring a thermally coagulating β-1,3-glucan aqueous dispersion containing an oily substance in a liquid of gel-forming temperature.

CONSTITUTION: A thermally coagulating β-1,3-glucan aqueous dispersion containing an oily substance is mixed and stirred in a liquid of gel-forming temperature (preferably 90-100°C). The oily substance is preferably a vegetable fatty oil, and the β-1,3-glucan is preferably cardlan. The cardlan can be produced e.g. with Alcaligenes faecalis var. mixogenes strain 10C3K. The thermally coagulating β-1,3-glucan aqueous solution containing the oily substance is preferably obtained by adding 2-20 pts.wt. of the oily substance to 1 pt.wt. of a β-1,3-glucan aqueous dispersion. The liquid of gel-forming temperature includes vegetable oils and fats, animal oils and fats, and water. The diameter of the objective gel is preferably 0.1-0.8mm in a water-containing state.