The present invention has objects to provide a powdery plant extract for beverages, having satisfactory flavor-retaining effect and solubility. The present invention solves the above objects by providing a powdery plant extract for beverages, comprising a plant extract for beverages and a branched α-glucan mixture having the following characteristics (A) to (C):(A) Being constructed by glucose molecules;(B) Having a branched structure with a glucose polymerization degree of one or more, bound via a linkage other than α-1,4 linkage to a non-reducing end glucose residue at an end position of a linear glucan with a glucose polymerization degree of 3 or higher, having a structure of binding glucose molecules via α-1,4 linkages; and(C) Isomaltose in an amount of 5% by mass or higher, on a dry solid basis, of the hydrolysate is formed when digested by isomaltodextranase;where the mass ratio of the plant extract for beverages and the branched α-glucan mixture is in a range of 1:0.1 to 1:20, on a dry solid basis.