One objective of the invention is to bring improvements in foods containing insoluble dietary fibers, in terms of taste, such as astringency, and properties, such as ease of intake. The composition comprises a fine grain complex containing an insoluble dietary fiber and satisfies (1) to (5) while satisfying one or more among (6-1) to (6-3). (1) Contains 0.1% by mass or more insoluble dietary fiber. (2) The total oil and fat content is less than 20% by mass. (3) The pre-sonication maximum particle diameter is greater than 100 µm. (4) The pre-sonication mode diameter is between 5 µm and 400 µm inclusive. (5) The post-sonication mode diameter is between 0.3 µm and 100 µm inclusive. (6-1) The numerical value N (I) determined by formula (I) is 1.20 or greater. (Math. 1) N (I) = (a/ß) (I) (6-2) The numerical value N (II) determined by formula (II) is 1.40 or greater. (Math 2) N (II) = (a/ß)/? (II) (6-3) The numerical value N (III) determined by formula (III) is 0.50 or greater. (Math 3) N (III) = (a/ß) × ?A (III)
