The present invention provides a non-digestible hydroxypropyl starch hydrolysate which can be used as novel water soluble dietary fiber, a method for producing it, as well as food products and beverages containing the non-digestible hydroxypropyl starch hydrolysate. The present invention provides the non-digestible hydroxypropyl starch hydrolysate characterized by having a DE value of less than 20 and a glucose content of less than 3% by mass food products and beverages containing it and the method for producing the non-digestible hydroxypropyl starch hydrolysate comprising the steps of: (A) hydrolyzing a hydroxypropyl starch with a degree of substitution of 0.05 to 0.4 with &alpha-amylase and then with glucoamylase and (B) removing glucose from the hydrolysate obtained in the step (A).
