PROBLEM TO BE SOLVED: To provide a production method of semi-finished soy sauce utilizing an amino acid mixture comprising specific amino acids; and to provide a production method of waste lees, and the semi-finished soy sauce.SOLUTION: A powdery amino acid mixture containing, as an amino acid mixture, based on the weight of the amino acid mixture, 35.0-45.0 wt% alanine, 1.8-2.2 wt% arginine, 44.2-51.8 wt% glycine, and 9.0-11.0 wt% sodium glutamate is added to various tastes obtained in a production process of soy sauce, then brewed and fermented, and a brewed product obtained thereby is squeezed and filtered, to thereby produce semi-finished soy sauce.SELECTED DRAWING: None
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