[Problem] To provide a method for producing an ascorbic acid 2 glucoside anhydrous crystal containing powder with which it is possible to produce a powder that will not show significant solidification even when the percentage of ascorbic acid 2 glucoside produced is less than 35 mass%. [Solution] A method for producing an ascorbic acid 2 glucoside anhydrous crystal containing powder comprising a step in which a solution containing either liquefied starch or dextrin and L ascorbic acid is exposed to CGTase and then to glucoamylase in order to obtain a solution wherein the percentage of ascorbic acid 2 glucoside produced is 27 mass% or greater a step for purifying the resulting solution such that the ascorbic acid 2 glucoside content exceeds 86 mass% a step for precipitating the ascorbic acid 2 glucoside anhydrous crystals by controlled cooling or semi controlled cooling and a step for recovering aging and drying the precipitated ascorbic acid 2 glucoside anhydrous crystals.
