The invention provides a stevia formulation comprising a stevia sweetener with a rebaudioside A content of 95% or greater, and 0.25 to 5.15 parts by weight of a sugarcane-derived extract (a), 0.06 to 2.50 parts by weight of a sugarcane-derived extract (b) and 0.002 to 12.5 parts by weight of γ-aminobutyric acid with respect to 100 parts by weight of the stevia sweetener.