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 converts the sugars in rice into alcohol, which is then further fermented into acetic acid, giving rice vinegar its distinct tangy flavor. There are different varieties of rice vinegar, including white rice vinegar, red rice vinegar, and black rice vinegar. Each type has its own unique taste and is used for various culinary purposes, such as salad dressings, marinades, and sushi rice seasoning. Rice vinegar is also known for its mild acidity compared to other vinegars.