PROBLEM TO BE SOLVED: To provide a brewed vinegar containing high-concentration sodium acetate in which astringency of sodium acetate is suppressed, a food shelf life improver using the brewed vinegar containing high sodium acetate, and a method for improving food shelf life. And A high-concentration sodium acetate-containing brew vinegar obtained by neutralizing acetic acid contained in high-acid brew vinegar with an inorganic sodium salt, wherein the acetic acid / sodium acetate ratio is 0.05 to 0.14. A solubilized vinegar containing high-concentration sodium acetate, and a shelf life improving agent for foods using the brewed vinegar containing high-concentration sodium acetate and a method for improving the shelf life of foods are characterized by being in the range. [Selection diagram] None
