The present invention addresses the problem of providing a powdery plant extract for beverages having an excellent flavor-retention effect and high solubility. To solve this problem, provided is a powdery plant extract for beverages which comprises a drinkable plant extract and a branched α-glucan mixture, said branched α-glucan mixture having properties (A) to (C), at a ratio by mass in terms of solid of 1:0.1 to 1:20: (A) containing glucose as a constituting sugar; (B) having a branched structure with a glucose polymerization degree of 1 or greater that is connected, via a bond other than an α-1,4 bond, to a non-reducing terminal glucose residue positioned at an end of a linear glucan with a glucose polymerization degree of 3 or greater connected via an α-1,4 bond; and (C) when digested by isomaltodextranase, forming isomaltose in an amount of 5 mass% or more relative to solid digestion products.
