Vinegar is a sour liquid made through the fermentation of ethanol by acetic acid bacteria, typically containing 4–8% acetic acid. It is widely used in cooking, cleaning, food preservation, and health remedies. Common types include white, apple cider, balsamic, and rice vinegar. Known for its antibacterial properties, vinegar aids digestion, regulates blood sugar, and acts as a natural disinfectant. However, excessive consumption may cause acidity-related issues.