"cheese curds are fresh, young cheddar cheese in the natural, random shape and form before being processed into blocks and aged. (Cheddar cheese is typically aged from 60 days to 4 years before being sold.) Unlike the aged variety, curds lose their desirable qualities if refrigerated or not eaten for a few days (the squeak disappears and they turn dry and salty). This means that even if you can find them in ordinary supermarkets, IMHO they are probably a few weeks old, and inedible or at least unremarkable."