The invention relates to a grain powder composition, obtainable by blending (A) 30 to 75 parts by weight of soft wheat flour, (B) 10 to 30 parts by weight of at least one or more members selected from moderate wheat flour, semi-hard wheat flour, and hard wheat flour or 0.5 to 4 parts by weight of wheat protein, and (C) 15 to 40 parts by weight of esterified starch or etherified starch, provided that the total of the 3 components is 100 parts by weight when (B) is not wheat protein.