Rice vinegar is a type of vinegar made from fermented rice. It is commonly used in Asian cuisine, particularly in dishes from Japan, China, and Korea. The fermentation process gives it a mild flavor, making it less acidic than other types of vinegar, such as white vinegar or apple cider vinegar. There are different varieties of rice vinegar, including white rice vinegar, red rice vinegar, and black rice vinegar. Each type has its unique taste and is used for various culinary purposes, such as salad dressings, marinades, and sushi rice seasoning.