Curd is a dairy product obtained by curdling milk with rennet or an acid such as lemon juice or vinegar, and then draining off the liquid portion. Cottage cheese is an example of a curd product.

The word curd is also used to describe a creamy spread made from juice (usually lemon), sugar, butter and egg yolks - the ingredients are cooked together until the mixture is thick (getting even thicker as it cools).