Cadbury Double Decker is a popular chocolate bar produced by Cadbury UK. It consists of two layers of nougatine, crispies, and soft chewy nougat, coated in Cadbury milk chocolate. The name "Double Decker" refers to the two layers within the bar, with the lower layer consisting of crunchy cereal and the upper layer being soft and chewy nougat. The combination of textures, from the crispy crunch to the chewy nougat, all enveloped in Cadbury's smooth milk chocolate, creates a satisfying and multi-dimensional taste experience. Cadbury Double Decker is a beloved treat for those who enjoy a mix of crunchy, chewy, and chocolatey flavors in a single bar.