What is the white stuff in the middle of the cable sweets?

The white stuff in the middle of cable sweets, often referred to as "cable" or "sour belts," is typically a type of marshmallow or fondant-like filling. This soft, chewy center contrasts with the outer layer, which is usually made of a sugary, gummy texture. The filling can also be flavored or coated with powdered sugar or citric acid for added taste. Overall, it enhances the sweetness and texture of the candy.