PURPOSE: To obtain acidic liquid seasoning having a flavor of brewed vinegar, slight irritation of acetic acid of its own, harmonized well with a flavor of SAKE (liquor), by using both rice vinegar and SAKE comprising rice as a main raw material.

CONSTITUTION: Rice vinegar is blended with SAKE such as refined SAKE, low- class distilled spirits of rice, SAKE from unpolished rice, etc. comprising rice as a main raw material, and an alcohol concentration is adjusted to 1/4W1 as large as that of acetic acid, or when rice vinegar is produced by using SAKE rice as a main raw material obtained from rice as a main raw material by a conventional procedure and rice vinegar as seed vinegar, acetic acid fermentation is finished when the alcohol concentration becomes 1/4W1 as large as that of acetic acid.