Vinegar is a sharp, tangy liquid produced through the natural fermentation of grains, fruits, or sugar sources, resulting in acetic acid that gives it its distinctive sour flavour. Known for its clear appearance and crisp aroma, vinegar is widely used in cooking, pickling, seasoning, and preserving foods. It adds brightness to salads, marinades, chutneys, sauces, and dressings while enhancing overall flavour balance. Vinegar is also valued for its versatility in culinary applications such as tenderising, deglazing, and flavour layering. Whether made from apple, rice, malt, or synthetic sources, vinegar remains an essential ingredient for everyday kitchen use.