Curd is a dairy product made by coagulating milk, which means that the milk proteins clump together to form a solid mass. This process is typically achieved by adding an acid, such as lemon juice or vinegar, or by using a starter culture containing lactic acid bacteria. The resulting product is soft and creamy, often used in various cuisines around the world. In addition to being a versatile ingredient, curd is rich in nutrients, including protein, calcium, and probiotics. It can be consumed on its own, used in cooking, or served as a base for dishes like yogurt and cheese. Curd is popular in many cultures, especially in Indian cuisine, where it is known as dahi.