Can confectioner sugar go bad

Answer 1

Confectioners' sugar, or powdered sugar, has a long shelf life due to its low moisture content. While it doesn't spoil in the traditional sense, it can clump or harden if exposed to moisture or humidity. If stored in a cool, dry place in an airtight container, it can last for years without significant loss of quality. However, it's best to check for any off smells or unusual textures before use.