PROBLEM TO BE SOLVED: To provide a method which can efficiently manufacture a powder type storable duration improver for food that influence to taste of the food is little, has enough storable duration improvement effect, and deflection of acetic acid content by segregation is suppressed.SOLUTION: A manufacturing method of a powder type storable duration improver for food includes: (A) a step getting a mixture by heating anhydrous sodium acetate, acetic acid water solution and sucrose fatty acid ester to 70-100°C while stirring or kneading (B) a step getting a solidified mixture by cooling the mixture provided in the step (A) to 10-40°C while stirring or kneading (C) and a step crushing the solidified mixture provided in the step (B)SELECTED DRAWING: None
